Name: Selenium Oxide
CAS: 7446-08-4
EC Number: 231-194-7
Chemical Formular: SeO2
Appearance: White crystals
Molecular Weight: 110.97 g/mol
Melting Point: 340 °C (644 °F; 613 K)
Boiling Point: 350 °C (662 °F; 623 K)
Density: 3.954 g/cm3
Solubility in water: n/a
Exact Mass: 111.90635 g/mol
Monoisotopic Mass: 111.90635 g/mol
Topological Polar Surface Area: 34.1 A^2
Complexity: 18.3
MATERIAL SAFETY DATA SHEETS
According to the UN GHS revision 8
SECTION 1: Identification
1.1
GHS Product identifier
| Product name | Selenium Oxide |
|---|
1.2
Other means of identification
| Product number | – |
|---|---|
| Other names | Selenium dioxide; |
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
Acute toxicity – Category 3, Oral
Skin corrosion, Sub-category 1B
Serious eye damage, Category 1
Acute toxicity – Category 2, Inhalation
Specific target organ toxicity – repeated exposure, Category 2
Hazardous to the aquatic environment, short-term (Acute) – Category Acute 1
Hazardous to the aquatic environment, long-term (Chronic) – Category Chronic 1
2.2
GHS label elements, including precautionary statements
| Pictogram(s) |
|
|---|---|
| Signal word | Danger |
| Hazard statement(s) | H301 Toxic if swallowed H314 Causes severe skin burns and eye damage H330 Fatal if inhaled H373 May cause damage to organs through prolonged or repeated exposure H410 Very toxic to aquatic life with long lasting effects |
| Precautionary statement(s) | |
| Prevention | P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P280 Wear protective gloves/protective clothing/eye protection/face protection/hearing protection/… P271 Use only outdoors or in a well-ventilated area. P284 [In case of inadequate ventilation] wear respiratory protection. P273 Avoid release to the environment. |
| Response | P301+P316 IF SWALLOWED: Get emergency medical help immediately. P321 Specific treatment (see … on this label). P330 Rinse mouth. P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P363 Wash contaminated clothing before reuse. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P316 Get emergency medical help immediately. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P305+P354+P338 IF IN EYES: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. P317 Get medical help. P320 Specific treatment is urgent (see … on this label). P319 Get medical help if you feel unwell. P391 Collect spillage. |
| Storage | P405 Store locked up. P403+P233 Store in a well-ventilated place. Keep container tightly closed. |
| 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 name | Common names and synonyms | CAS number | EC number |
|---|---|---|---|
| Selenium Oxide | Selenium dioxide | 7446-08-4 | 231-194-7 |
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
Remove contaminated clothes. Rinse skin with plenty of water or shower. 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. Refer for medical attention .
4.2
Most important symptoms/effects, acute and delayed
no data available
4.3
Indication of immediate medical attention and special treatment needed, if necessary
no data available
SECTION 5: Fire-fighting measures
5.1
Suitable extinguishing media
Use dry chemical, carbon dioxide or alcohol-resistant foam.
5.2
Specific hazards arising from the chemical
Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.
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
Evacuate danger area! Consult an expert! Sweep spilled substance into covered containers. Carefully collect remainder. Then store and dispose of according to local regulations. Personal protection: complete protective clothing including self-contained breathing apparatus. Do NOT let this chemical enter the environment.
6.2
Environmental precautions
Prevent further spillage or leakage if it is safe to do so. Do not let the chemical enter drains. Discharge into the environment must be avoided.
6.3
Methods and materials for containment and cleaning up
Collect and arrange disposal. Keep the chemical in suitable and closed containers for disposal. Remove all sources of ignition. Use spark-proof tools and explosion-proof equipment. Adhered or collected material should be promptly disposed of, in accordance with appropriate laws and regulations.
SECTION 7: Handling and storage
7.1
Precautions for safe handling
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
Separated from food and feedstuffs. Dry.
SECTION 8: Exposure controls/personal protection
8.1
Control parameters
Occupational Exposure limit values
TLV: 0.2 mg/m3, as TWA.MAK: (as Se, inhalable fraction): 0.02 mg/m3; peak limitation category: II(8); skin absorption (H); carcinogen category: 3B; pregnancy risk group: C
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 local exhaust or breathing protection.
Thermal hazards
no data available
SECTION 9: Physical and chemical properties and safety characteristics
| Physical state | Solid. Powder. |
|---|---|
| Colour | White. |
| Odour | no data available |
| Melting point/freezing point | 340 °C. Atm. press.:1 015.25 hPa. |
| Boiling point or initial boiling point and boiling range | 315 °C |
| Flammability | no data available |
| Lower and upper explosion limit/flammability limit | no data available |
| Flash point | 315ºC |
| Auto-ignition temperature | >= 210 – <= 340 °C. Remarks:Small endothermic effect, no further exothermic or endothermic effects were observed up to 400 °C. |
| Decomposition temperature | no data available |
| pH | no data available |
| Kinematic viscosity | no data available |
| Solubility | Miscible with water |
| Partition coefficient n-octanol/water | no data available |
| Vapour pressure | < 0.001 mm Hg. Temperature:20 °C. |
| Density and/or relative density | 3.95. |
| Relative vapour density | no data available |
| Particle characteristics | no data available |
SECTION 10: Stability and reactivity
10.1
Reactivity
no data available
10.2
Chemical stability
no data available
10.3
Possibility of hazardous reactions
Decomposes on heating. This produces toxic fumes. The solution in water is a medium strong acid (selenic acid). Attacks many metals in the presence of water.
10.4
Conditions to avoid
no data available
10.5
Incompatible materials
no data available
10.6
Hazardous decomposition products
no data available
SECTION 11: Toxicological information
Acute toxicity
- Oral: LD50 – rat (male/female) – 68.1 mg/kg bw.
- Inhalation: LC50 – rat (male/female) – > 0.052 – <= 0.51 mg/L air (analytical).
- 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
no data available
Reproductive toxicity
no data available
STOT-single exposure
The substance is corrosive to the eyes, skin and respiratory tract. Inhalation may cause lung oedema. See Notes. The substance may cause effects on the eyes. This may result in allergic-type reaction of the eyelids (rose eye). Medical observation is indicated.
STOT-repeated exposure
Repeated or prolonged contact may cause skin sensitization. The substance may have effects on the respiratory tract, gastrointestinal tract, central nervous system and liver. This may result in nasal irritation, persistent garlic odour, stomach pain, nervousness and liver impairment.
Aspiration hazard
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.
SECTION 12: Ecological information
12.1
Toxicity
- Toxicity to fish: LC50 – Morone saxatilis – 3 300 µg/L – 96 h. Remarks:Se.
- Toxicity to daphnia and other aquatic invertebrates: LC50 – Daphnia magna – 550 µg/L – 48 h. Remarks:Se.
- Toxicity to algae: EC50 – Pseudokirchneriella subcapitata (previous names: Raphidocelis subcapitata, Selenastrum capricornutum) – 44 240 µg/L – 72 h.
- Toxicity to microorganisms: EC50 – activated sludge of a predominantly domestic sewage – > 3 200 mg/L – 3 h. Remarks:Respiration rate.
12.2
Persistence and degradability
no data available
12.3
Bioaccumulative potential
no data available
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: UN3283 (For reference only, please check.) | IMDG: UN3283 (For reference only, please check.) | IATA: UN3283 (For reference only, please check.) |
14.2
UN Proper Shipping Name
| ADR/RID: SELENIUM COMPOUND, SOLID, N.O.S. (For reference only, please check.) | IMDG: SELENIUM COMPOUND, SOLID, N.O.S. (For reference only, please check.) | IATA: SELENIUM COMPOUND, SOLID, 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: Yes | IMDG: Yes | IATA: 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 name | Common names and synonyms | CAS number | EC number |
|---|---|---|---|
| Selenium Oxide | Selenium dioxide | 7446-08-4 | 231-194-7 |
| European Inventory of Existing Commercial Chemical Substances (EINECS) | Listed. | ||
| EC Inventory | Listed. | ||
| United States Toxic Substances Control Act (TSCA) Inventory | Listed. | ||
| China Catalog of Hazardous chemicals 2015 | Listed. | ||
| New Zealand Inventory of Chemicals (NZIoC) | Listed. | ||
| Philippines Inventory of Chemicals and Chemical Substances (PICCS) | Listed. | ||
| Vietnam National Chemical Inventory | Listed. | ||
| Chinese Chemical Inventory of Existing Chemical Substances (China IECSC) | Listed. | ||
| Korea Existing Chemicals List (KECL) | Listed. | ||
SECTION 16: Other information
Information on revision
| Creation Date | Sep 21, 2020 |
|---|---|
| Revision Date | Sep 21, 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
The symptoms of lung oedema 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.Immediate administration of an appropriate inhalation therapy by a doctor or a person authorized by him/her, should be considered.
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: | SeO2 |
| PubChem CID: | 24007 |
| IUPAC Name: | selenium dioxide |
| Inchl: | InChI=1S/O2Se/c1-3-2 |
| InChI Key: | JPJALAQPGMAKDF-UHFFFAOYSA-N |
| Canonical SMILES: | O=[Se]=O |
| Pictogram(s): |    |
| Signal: | Danger |
| GHS Hazard Statements: | H301 + H331-H373-H410 |
| Hazard Codes: | T,N |
| Risk Codes: | R23/25-33-50/53 |
| Precautionary Statement Codes: | P261-P273-P301 + P310-P311-P501 |
| Flash Point: | n/a |
Selenium dioxide
Oxoselane oxide
Selenium(IV) oxide
Selenious anhydride
Selenium dioxide dimer
Selenous acid solution
n/a
Selenium is a chemical element with the symbol Se and atomic number 34.
It is a nonmetal (more rarely considered a metalloid) with properties that are intermediate between the elements above and below in the periodic table, sulfur and tellurium, and also has similarities to arsenic.
It rarely occurs in its elemental state or as pure ore compounds in the Earth’s crust. Selenium (from Ancient Greek σελήνη (selḗnē) “Moon”) was discovered in 1817 by Jöns Jacob Berzelius, who noted the similarity of the new element to the previously discovered tellurium (named for the Earth).
Selenium is found in metal sulfide ores, where it partially replaces the sulfur.
Commercially, selenium is produced as a byproduct in the refining of these ores, most often during production. Minerals that are pure selenide or selenate compounds are known but rare.
Oxygen 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.
Fiber drums, steel drums, and bulk bags
