Name: Potassium Chromate
CAS: 7789-00-6
EC Number: 232-140-5
Chemical Formular: K2CrO4
Appearance: Yellow powder
Molecular Weight: 194.19 g/mol
Melting Point: 968 °C (1,774 °F; 1,241 K)
Boiling Point: 1,000 °C (1,830 °F; 1,270 K)
Density: 2.7320 g/cm3
Solubility in water: 62.9 g/100 mL (20 °C)
Exact Mass: 193.847576 g/mol
Monoisotopic Mass: 193.847576 g/mol
Topological Polar Surface Area: 80.3 A^2
Complexity: 62.2

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MATERIAL SAFETY DATA SHEETS

According to the UN GHS revision 8

Version: 1.0

Creation Date: Nov 17, 2020

Revision Date: Nov 17, 2020

SECTION 1: Identification


1.1

GHS Product identifier

Product name

Potassium Chromate


1.2

Other means of identification

Product number

Other names

Potassium chromate;


1.3

Recommended use of the chemical and restrictions on use

Identified uses

Industrial and scientific research uses.

Uses advised against

no data available


1.4

Supplier’s details

Company

Elements China Limited

Address

Building 2, No.5555, Shenzhuan Hwy, Shanghai , China

Telephone

+86-021-3776-2181

1.5Emergency phone number

Emergency phone number

+86-021-3776-2181

Service hours

Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

SECTION 2: Hazard identification


2.1

Classification of the substance or mixture

Skin irritation, Category 2

Eye irritation, Category 2

Skin sensitization, Category 1

Specific target organ toxicity – single exposure, Category 3

Germ cell mutagenicity, Category 1B

Hazardous to the aquatic environment, short-term (Acute) – Category Acute 1

Hazardous to the aquatic environment, long-term (Chronic) – Category Chronic 1

Carcinogenicity, Category 1B


2.2

GHS label elements, including precautionary statements

Pictogram(s)

Signal word

Danger

Hazard statement(s)

H315 Causes skin irritation

H319 Causes serious eye irritation

H317 May cause an allergic skin reaction

H335 May cause respiratory irritation

H340 May cause genetic defects

H410 Very toxic to aquatic life with long lasting effects

Precautionary statement(s)
Prevention

P264 Wash … thoroughly after handling.

P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/…

P261 Avoid breathing dust/fume/gas/mist/vapours/spray.

P272 Contaminated work clothing should not be allowed out of the workplace.

P271 Use only outdoors or in a well-ventilated area.

P203 Obtain, read and follow all safety instructions before use.

P273 Avoid release to the environment.

Response

P302+P352 IF ON SKIN: Wash with plenty of water/…

P321 Specific treatment (see … on this label).

P332+P317 If skin irritation occurs: Get medical help.

P362+P364 Take off contaminated clothing and wash it before reuse.

P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

P333+P317 If skin irritation or rash occurs: Get medical help.

P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing.

P319 Get medical help if you feel unwell.

P318 IF exposed or concerned, get medical advice.

P391 Collect spillage.

Storage

P403+P233 Store in a well-ventilated place. Keep container tightly closed.

P405 Store locked up.

Disposal

P501 Dispose of contents/container to an appropriate treatment and disposal facility in accordance with applicable laws and regulations, and product characteristics at time of disposal.


2.3

Other hazards which do not result in classification

no data available

SECTION 3: Composition/information on ingredients


3.1

Substances

Chemical nameCommon names and synonymsCAS numberEC number
Potassium ChromatePotassium chromate7789-00-6232-140-5

SECTION 4: First-aid measures


4.1

Description of necessary first-aid measures

If inhaled

Fresh air, rest. Half-upright position. Artificial respiration may be needed. Refer for medical attention.

Following skin contact

First rinse with plenty of water for at least 15 minutes, then remove contaminated clothes and rinse again. Refer for medical attention .

Following eye contact

First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention.

Following ingestion

Rinse mouth. Do NOT induce vomiting. Give one or two glasses of water to drink. Refer for medical attention .


4.2

Most important symptoms/effects, acute and delayed

Inhalation causes local irritation of mucous membranes; continuing nose irritation can result in perforation of nasal septum. Ingestion may cause violent gastroenteritis, circulatory collapse, vertigo, coma, and toxic nephritis; ingestion of excessive quantities can be fatal. Contact with eyes causes severe irritation and conjunctivitis. Repeated or prolonged exposure to dust, mist, or solutions may cause dermatitis; contact with breaks in the skin may cause “chrome sores” appearing as slow-healing, hard-rimmed ulcers which leave the area vulnerable to infection. (USCG, 1999)


4.3

Indication of immediate medical attention and special treatment needed, if necessary

Immediate first aid: Ensure that adequate decontamination has been carried out. If patient is not breathing, start artificial respiration, preferably with a demand valve resuscitator, bag-valve-mask device, or pocket mask, as trained. Perform CPR as necessary. Immediately flush contaminated eyes with gently flowing water. Do not induce vomiting. If vomiting occurs, lean patient forward or place on left side (head-down position, if possible) to maintain an open airway and prevent aspiration. Keep patient quiet and maintain normal body temperature. Obtain medical attention. Inorganic Acids and Related Compounds

SECTION 5: Fire-fighting measures


5.1

Suitable extinguishing media

Suitable extinguishing media: Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.


5.2

Specific hazards arising from the chemical

Behavior in Fire: May increase intensity of fire if in contact with combustible materials. Cool containers and spilled material with plenty of water. (USCG, 1999)


5.3

Special protective actions for fire-fighters

In case of fire in the surroundings, use appropriate extinguishing media.

SECTION 6: Accidental release measures


6.1

Personal precautions, protective equipment and emergency procedures

Personal protection: chemical protection suit including self-contained breathing apparatus. Sweep spilled substance into containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. Do NOT let this chemical enter the environment.


6.2

Environmental precautions

Personal protection: chemical protection suit including self-contained breathing apparatus. Sweep spilled substance into containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. Do NOT let this chemical enter the environment.


6.3

Methods and materials for containment and cleaning up

ACCIDENTAL RELEASE MEASURES: Personal precautions, protective equipment and emergency procedures: Wear respiratory protection. Avoid dust formation. Avoid breathing vapors, mist or gas. Ensure adequate ventilation. Evacuate personnel to safe areas. Avoid breathing dust; Environmental precautions: Prevent further leakage or spillage if safe to do so. Do not let product enter drains. Discharge into the environment must be avoided; Methods and materials for containment and cleaning up: Pick up and arrange disposal without creating dust. Sweep up and shovel. Keep in suitable, closed containers for disposal.

SECTION 7: Handling and storage


7.1

Precautions for safe handling

NO contact with combustible substances.
Handling in a well ventilated place.
Wear suitable protective clothing.
Avoid contact with skin and eyes.
Avoid formation of dust and aerosols.
Use non-sparking tools.
Prevent fire caused by electrostatic discharge steam.


7.2

Conditions for safe storage, including any incompatibilities

Provision to contain effluent from fire extinguishing. Dry. Well closed. Separated from combustible substances, reducing agents and food and feedstuffs. Store in an area without drain or sewer access.Keep container tightly closed in a dry and well-ventilated place. Storage class (TRGS 510): Non-combustible, acute toxic Cat.3 / toxic hazardous materials or hazardous materials causing chronic effects

SECTION 8: Exposure controls/personal protection


8.1

Control parameters

Occupational Exposure limit values

TLV: (as Cr(VI), inhalable fraction): 0.0002 mg/m3, as TWA; 0.0005 mg/m3 as STEL; A1 (confirmed human carcinogen); (skin); (DSEN); (RSEN).EU-OEL: (as Cr): 0.1 mg/m3 as TWA

Biological limit values

no data available


8.2

Appropriate engineering controls

Ensure adequate ventilation.
Handle in accordance with good industrial hygiene and safety practice.
Set up emergency exits and the risk-elimination area.

8.3Individual protection measures, such as personal protective equipment (PPE)

Eye/face protection

Wear face shield or eye protection in combination with breathing protection.

Skin protection

Protective gloves. Protective clothing.

Respiratory protection

Use closed system or ventilation.

Thermal hazards

no data available

SECTION 9: Physical and chemical properties and safety characteristics

Physical state

Solid. Crystalline.

Colour

Yellow.

Odour

Odorless

Melting point/freezing point

968.3 °C.

Boiling point or initial boiling point and boiling range

1000 °C

Flammability

Not combustible but enhances combustion of other substances.

Lower and upper explosion limit/flammability limit

no data available

Flash point

no data available

Auto-ignition temperature

no data available

Decomposition temperature

no data available

pH

Aqueous solution is alkaline to litmus or phenolphthalein

Kinematic viscosity

no data available

Solubility

Miscible with water

Partition coefficient n-octanol/water

no data available

Vapour pressure

Zero

Density and/or relative density

2.732 g/cm³.

Relative vapour density

6.7 (vs air)

Particle characteristics

no data available

SECTION 10: Stability and reactivity


10.1

Reactivity

250 mg/cu m (as Cr(II)). Chromium(II) compounds (as Cr)

25 mg/cu m (as Cr(III)). Chromium(III) compounds (as Cr)

15 mg/cu m (as Cr(VI)). Chromic acid and chromates

NIOSH considers chromic acid and chromates to be potential occupational carcinogens. Chromic acid and chromates

The solution in water is a weak base. The substance is a strong oxidant. It reacts with combustible and reducing materials.


10.2

Chemical stability

Stable under recommended storage conditions.


10.3

Possibility of hazardous reactions

Non-combustibleOxidizing agents, such as POTASSIUM CHROMATE, can react with reducing agents to generate heat and products that may be gaseous (causing pressurization of closed containers). The products may themselves be capable of further reactions (such as combustion in the air). The chemical reduction of materials in this group can be rapid or even explosive, but often requires initiation (heat, spark, catalyst, addition of a solvent). Explosive mixtures of inorganic oxidizing agents with reducing agents often persist unchanged for long periods if initiation is prevented. Such systems are typically mixtures of solids, but may involve any combination of physical states. Some inorganic oxidizing agents are salts of metals that are soluble in water; dissolution dilutes but does not nullify the oxidizing power of such materials. Organic compounds, in general, have some reducing power and can in principle react with compounds in this class. Actual reactivity varies greatly with the identity of the organic compound. Inorganic oxidizing agents can react violently with active metals, cyanides, esters, and thiocyanates.


10.4

Conditions to avoid

no data available


10.5

Incompatible materials

Incompatible materials: Organic materials, powdered metals, strong oxidizing agents


10.6

Hazardous decomposition products

When heated to decomposition it emits toxic fumes of /potassium oxide/.

SECTION 11: Toxicological information

Acute toxicity

  • Oral: LD50 Mouse oral 180 mg/kg
  • Inhalation: no data available
  • Dermal: no data available

Skin corrosion/irritation

no data available

Serious eye damage/irritation

no data available

Respiratory or skin sensitization

no data available

Germ cell mutagenicity

no data available

Carcinogenicity

WEIGHT OF EVIDENCE CHARACTERIZATION: Under the current guidelines (1986), Cr(VI) is classified as Group A – known human carcinogen by the inhalation route of exposure. Carcinogenicity by the oral route of exposure cannot be determined and is classified as Group D. Under the proposed guidelines (1996), Cr(VI) would be characterized as a known human carcinogen by the inhalation route of exposure on the following basis. Hexavalent chromium is known to be carcinogenic in humans by the inhalation route of exposure. Results of occupational epidemiological studies of chromium-exposed workers are consistent across investigators and study populations. Dose-response relationships have been established for chromium exposure and lung cancer. Chromium-exposed workers are exposed to both Cr(III) and Cr(VI) compounds. Because only Cr(VI) has been found to be carcinogenic in animal studies, however, it was concluded that only Cr(VI) should be classified as a human carcinogen. Animal data are consistent with the human carcinogenicity data on hexavalent chromium. Hexavalent chromium compounds are carcinogenic in animal bioassays, producing the following tumor types: intramuscular injection site tumors in rats and mice, intrapleural implant site tumors for various Cr(VI) compounds in rats, intrabronchial implantation site tumors for various Cr(VI) compounds in rats and subcutaneous injection site sarcomas in rats. In vitro data are suggestive of a potential mode of action for hexavalent chromium carcinogenesis. Hexavalent chromium carcinogenesis may result from the formation of mutagenic oxidatitive DNA lesions following intracellular reduction to the trivalent form. Cr(VI) readily passes through cell membranes and is rapidly reduced intracellularly to generate reactive Cr(V) and Cr(IV) intermediates and reactive oxygen species. A number of potentially mutagenic DNA lesions are formed during the reduction of Cr(VI). Hexavalent chromium is mutagenic in bacterial assays, yeasts and V79 cells, and Cr(VI) compounds decrease the fidelity of DNA synthesis in vitro and produce unscheduled DNA synthesis as a consequence of DNA damage. Chromate has been shown to transform both primary cells and cell lines. HUMAN CARCINOGENICITY DATA: Occupational exposure to chromium compounds has been studied in the chromate production, chromeplating and chrome pigment, ferrochromium production, gold mining, leather tanning and chrome alloy production industries. Workers in the chromate industry are exposed to both trivalent and hexavalent compounds of chromium. Epidemiological studies of chromate production plants in Japan, Great Britain, West Germany, and the United States have revealed a correlation between occupational exposure to chromium and lung cancer, but the specific form of chromium responsible for the induction of cancer was not identified … Studies of chrome pigment workers have consistently demonstrated an association between occupational chromium exposure (primarily Cr(VI)) and lung cancer. Several studies of the chromeplating industry have demonstrated a positive relationship between cancer and exposure to chromium compounds. ANIMAL CARCINOGENICITY DATA: Animal data are consistent with the findings of human epidemiological studies of hexavalent chromium … Chromium (VI)

Reproductive toxicity

no data available

STOT-single exposure

The substance is corrosive to the eyes, skin and respiratory tract. Corrosive on ingestion. The substance may cause effects on the kidneys and liver. This may result in tissue lesions.

STOT-repeated exposure

Repeated or prolonged contact may cause skin sensitization. Repeated or prolonged inhalation may cause asthma. Repeated or prolonged inhalation may cause nasal ulceration. This may result in perforation of the nasal septum. The substance may have effects on the kidneys. This may result in kidney impairment. This substance is carcinogenic to humans. Animal tests show that this substance possibly causes toxicity to human reproduction or development.

Aspiration hazard

A harmful concentration of airborne particles can be reached quickly when dispersed, especially if powdered.

SECTION 12: Ecological information


12.1

Toxicity

  • Toxicity to fish: Range of species tested.
  • Toxicity to daphnia and other aquatic invertebrates: Range of species tested.
  • Toxicity to algae: Range of species tested.
  • Toxicity to microorganisms: Range of microbes reported.


12.2

Persistence and degradability

no data available


12.3

Bioaccumulative potential

Using potassium chromate as the source for chromium, a BCF of 1.0 (based on chromium) was determined for the whole body of Salmo gairdneri (rainbow trout) over a 30 days duration period(1). According to a classification scheme(2), this BCF range suggests that bioconcentration in aquatic organisms is low(SRC).


12.4

Mobility in soil

no data available


12.5

Other adverse effects

no data available

SECTION 13: Disposal considerations


13.1

Disposal methods

Product

The material can be disposed of by removal to
a licensed chemical destruction plant or by controlled incineration
with flue gas scrubbing. Do not contaminate water, foodstuffs,
feed or seed by storage or disposal. Do not discharge to sewer systems.

Contaminated packaging

Containers can be triply rinsed (or equivalent) and
offered for recycling or reconditioning.
Alternatively, the packaging can be punctured to
make it unusable for other purposes and then be disposed of
in a sanitary landfill. Controlled incineration
with flue gas scrubbing is possible for combustible packaging materials.

SECTION 14: Transport information


14.1

UN Number

ADR/RID: UN3288 (For reference only, please check.)IMDG: UN3288 (For reference only, please check.)IATA: UN3288 (For reference only, please check.)


14.2

UN Proper Shipping Name

ADR/RID: TOXIC SOLID, INORGANIC, N.O.S. (For reference only, please check.)IMDG: TOXIC SOLID, INORGANIC, N.O.S. (For reference only, please check.)IATA: TOXIC SOLID, INORGANIC, N.O.S. (For reference only, please check.)


14.3

Transport hazard class(es)

ADR/RID: 6.1 (For reference only, please check.)IMDG: 6.1 (For reference only, please check.)IATA: 6.1 (For reference only, please check.)


14.4

Packing group, if applicable

ADR/RID: I (For reference only, please check.)IMDG: I (For reference only, please check.)IATA: I (For reference only, please check.)


14.5

Environmental hazards

ADR/RID: YesIMDG: YesIATA: Yes


14.6

Special precautions for user

no data available


14.7

Transport in bulk according to IMO instruments

no data available

SECTION 15: Regulatory information


15.1

Safety, health and environmental regulations specific for the product in question

Chemical nameCommon names and synonymsCAS numberEC number
Potassium ChromatePotassium chromate7789-00-6232-140-5
European Inventory of Existing Commercial Chemical Substances (EINECS)Listed.
EC InventoryListed.
United States Toxic Substances Control Act (TSCA) InventoryListed.
China Catalog of Hazardous chemicals 2015Listed.
New Zealand Inventory of Chemicals (NZIoC)Listed.
Philippines Inventory of Chemicals and Chemical Substances
(PICCS)
Listed.
Vietnam National Chemical InventoryListed.
Chinese Chemical Inventory of Existing Chemical Substances (China
IECSC)
Listed.
Korea Existing Chemicals List (KECL)Listed.

SECTION 16: Other information

Information on revision

Creation DateNov 17, 2020
Revision DateNov 17, 2020

Abbreviations and acronyms

  • CAS: Chemical Abstracts Service
  • ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
  • RID: Regulation concerning the International Carriage of Dangerous Goods by Rail
  • IMDG: International Maritime Dangerous Goods
  • IATA: International Air Transportation Association
  • TWA: Time Weighted Average
  • STEL: Short term exposure limit
  • LC50: Lethal Concentration 50%
  • LD50: Lethal Dose 50%
  • EC50: Effective Concentration 50%

References

  • IPCS – The International Chemical Safety Cards (ICSC), website:
    http://www.ilo.org/dyn/icsc/showcard.home
  • HSDB – Hazardous Substances Data Bank, website: https://toxnet.nlm.nih.gov/newtoxnet/hsdb.htm
  • IARC – International Agency for Research on Cancer, website: http://www.iarc.fr/
  • eChemPortal – The Global Portal to Information on Chemical Substances by OECD, website:
    http://www.echemportal.org/echemportal/index?pageID=0&request_locale=en
  • CAMEO Chemicals, website: http://cameochemicals.noaa.gov/search/simple
  • ChemIDplus, website: http://chem.sis.nlm.nih.gov/chemidplus/chemidlite.jsp
  • ERG – Emergency Response Guidebook by U.S. Department of Transportation, website:
    http://www.phmsa.dot.gov/hazmat/library/erg
  • Germany GESTIS-database on hazard substance, website:
    http://www.dguv.de/ifa/gestis/gestis-stoffdatenbank/index-2.jsp
  • ECHA – European Chemicals Agency, website: https://echa.europa.eu/

Other Information

Do NOT take working clothes home.Rinse contaminated clothing with plenty of water because of fire hazard.Anyone who has shown symptoms of asthma due to this substance should avoid all further contact.The symptoms of asthma often do not become manifest until a few hours have passed and they are aggravated by physical effort. Rest and medical observation are therefore essential.

Any questions regarding this SDS, Please send your inquiry to [email protected]

Disclaimer: The above information is believed to be correct but does not purport to be all inclusive and
shall be used only as a guide. The information in this document is based on the present state of our
knowledge and is applicable to the product with regard to appropriate safety precautions. It does not
represent any guarantee of the properties of the product. We as supplier shall not be held liable for any
damage resulting from handling or from contact with the above product.

Chemical Formular:K2CrO4
PubChem CID:24597
IUPAC Name:dipotassium;dioxido(dioxo)chromium
Inchl:InChI=1S/Cr.2K.4O/q;2*+1;;;2*-1
InChI Key:XMXNVYPJWBTAHN-UHFFFAOYSA-N
Canonical SMILES:[O-][Cr](=O)(=O)[O-].[K+].[K+]
Pictogram(s):Globally Harmonized System of ClassificationGlobally Harmonized System of ClassificationGlobally Harmonized System of Classification
Signal:Danger
GHS Hazard Statements:H315-H317-H319-H335-H340-H350i-H410
Hazard Codes:T, N
Risk Codes:R49-46-36/37/38-43-50/53
Precautionary Statement Codes:P201-P273-P280-P301 + P310 + P330-P304 + P340 + P312-P308 + P313
Flash Point:n/a

Bipotassium chromate
Dipotassium monochromate
Tarapacaite
Chromate of potash
Dipotassium chromate

ChromiumChromium is a chemical element with the symbol Cr and atomic number 24. It is the first element in group 6.
It is a steely-grey, lustrous, hard and brittle transition metal.
Chromium is also the main additive in stainless steel, to which it adds anti-corrosive properties.
Chromium is also highly valued as a metal that is able to be highly polished while resisting tarnishing. Polished chromium reflects almost 70% of the visible spectrum, with almost 90% of infrared light being reflected.
The name of the element is derived from the Greek word χρῶμα, chrōma, meaning color, because many chromium compounds are intensely colored.
Chromium is a naturally occurring element found in rocks, animals, plants, soil, and in volcanic dust and gases. Chromium is present in the environment in several different forms. The most common forms are chromium(0), chromium(III), and chromium(VI).
No taste or odor is associated with chromium compounds. Chromium(III) occurs naturally in the environment and is an essential nutrient.
Chromium(VI) and chromium(0) are generally produced by industrial processes.
The metal chromium, which is the chromium(0) form, is used for making steel. Chromium(VI) and chromium(III) are used for chrome plating, dyes and pigments, leather tanning, and wood preserving.

PotassiumAn element in the alkali group of metals with an atomic symbol K, atomic number 19, and atomic weight 39.10. It is the chief cation in the intracellular fluid of muscle and other cells.
Potassium ion is a strong electrolyte that plays a significant role in the regulation of fluid volume and maintenance of the WATER-ELECTROLYTE BALANCE.
Potassium is the major cation (positive ion) inside animal cells, while sodium is the major cation outside animal cells. The concentration differences of these charged particles causes a difference in electric potential between the inside and outside of cells, known as the membrane potential.
The balance between potassium and sodium is maintained by ion pumps in the cell membrane. The cell membrane potential created by potassium and sodium ions allows the cell generate an action potential—a “spike” of electrical discharge.
The ability of cells to produce electrical discharge is critical for body functions such as neurotransmission, muscle contraction, and heart function.
Potassium is also an essential mineral needed to regulate water balance, blood pressure and levels of acidity.

OxygenOxygen is the chemical element with the symbol O and atomic number 8, meaning its nucleus has 8 protons.
Oxygen is a member of the chalcogen group on the periodic table, a highly reactive nonmetal, and an oxidizing agent that readily forms oxides with most elements as well as with other compounds.
Dioxygen is used in cellular respiration and many major classes of organic molecules in living organisms contain oxygen, such as proteins, nucleic acids, carbohydrates, and fats, as do the major constituent inorganic compounds of animal shells, teeth, and bone.
Oxygen was isolated by Michael Sendivogius before 1604, but it is commonly believed that the element was discovered independently by Carl Wilhelm Scheele, in Uppsala, in 1773 or earlier, and Joseph Priestley in Wiltshire, in 1774.

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