Chromium Oxide
CAS No. 1308-38-9 | Chemical Formula Cr2O3
Molecular Weight 151.99 EC No. 215-160-9 MDL No. MFCD00010949
Description
Chromium Oxide is an inorganic compound with the formula Cr2O3. It is one of the principal oxides of chromium.
In nature, it occurs as the rare mineral eskolaite. Cr2O3 is a hard, brittle material (Mohs hardness 8 to 8.5). It is not readily attacked by acids.
Chromium oxide is a well known catalyst for the complete oxidation of chlorinated hydrocarbons due to its high removal activity.
Chemical formula: Cr2O3
Molar mass:151.9904 g/mol
Appearance: light to dark green, fine crystals
Density:5.22 g/cm3
Melting point:2.435 °C (4.415 °F; 2.708 K)
Boiling point:4.000 °C (7.230 °F; 4.270 K)
Solubility in water: insoluble
Solubility in alcohol: insoluble in alcohol, acetone, acids
Synonyms
Chromium (3+); oxygen (2-)
Specification
Application
1.Used as a pigment.
2.It is used in paints, inks, and glasses
3.Along with many other oxides, it is used as a compound when polishing (also called stropping) the edges of knives, razors, surfaces of optical devices etc.
MSDS
MATERIAL SAFETY DATA SHEETS
According to the UN GHS revision 8
SECTION 1: Identification
1.1
GHS Product identifier
| Product name | Chromium Oxide |
|---|
1.2
Other means of identification
| Product number | – |
|---|---|
| Other names | – |
1.3
Recommended use of the chemical and restrictions on use
| Identified uses | Abrasives,Intermediates,Pigments,Plating agents and surface treating agents,Processing aids, specific to petroleum production |
|---|---|
| Uses advised against | no data available |
1.4
Supplier’s details
| Company | Shanghai Greenearth Chemicals Co.,Ltd |
|---|---|
| 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
Not classified.
2.2
GHS label elements, including precautionary statements
| Pictogram(s) | No symbol. |
|---|---|
| Signal word | No signal word |
| Hazard statement(s) | none |
| Precautionary statement(s) | |
| Prevention | none |
| Response | none |
| Storage | none |
| Disposal | none |
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 |
|---|---|---|---|
| Chromium Oxide | – | 1308-38-9 | 215-160-9 |
SECTION 4: First-aid measures
4.1
Description of necessary first-aid measures
If inhaled
Fresh air, rest.
Following skin contact
Rinse skin with plenty of water or shower.
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.
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
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
Wear self-contained breathing apparatus for firefighting if necessary
5.2
Specific hazards arising from the chemical
Not combustible.
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: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting.
6.2
Environmental precautions
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting.
6.3
Methods and materials for containment and cleaning up
ACCIDENTAL RELEASE MEASURES; Personal precautions, protective equipment and emergency procedures: Use personal protective equipment. Avoid dust formation. Avoid breathing vapors, mist or gas. Ensure adequate ventilation. Avoid breathing dust. Environmental precautions: Do not let product enter drains. 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
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
Keep container tightly closed in a dry and well-ventilated place. Hygroscopic Handle and store under inert gas. Keep in a dry place. Storage class (TRGS 510): Non Combustible Solids
SECTION 8: Exposure controls/personal protection
8.1
Control parameters
Occupational Exposure limit values
TLV: (as Cr(III), inhalable fraction): 0.003 mg/m3, as TWA; A4 (not classifiable as a human carcinogen); (SEN).EU-OEL: (as Cr(III)): 2 mg/m3 as TWA.MAK: sensitization of skin (SH)
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 safety goggles.
Skin protection
Protective gloves.
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. Crystalline. |
|---|---|
| Colour | Light to dark green. |
| Odour | no data available |
| Melting point/freezing point | 2 435 °C. |
| Boiling point or initial boiling point and boiling range | 4 000 °C. |
| Flammability | Not combustible. |
| Lower and upper explosion limit/flammability limit | no data available |
| Flash point | 3000ºC |
| Auto-ignition temperature | no data available |
| Decomposition temperature | no data available |
| pH | Trivalent chromium compounds are amphoteric |
| Kinematic viscosity | no data available |
| Solubility | In water, 3.13 ug/L at 20 deg C, pH 6; 2.96 ug/L at 20 deg C, pH 8 |
| Partition coefficient n-octanol/water | no data available |
| Vapour pressure | no data available |
| Density and/or relative density | 5.22 g/cm³. |
| Relative vapour density | no data available |
| Particle characteristics | no data available |
SECTION 10: Stability and reactivity
10.1
Reactivity
25 mg/cu m (as Cr(III)). Chromium(III) compounds (as Cr)
10.2
Chemical stability
Stable under recommended storage conditions.
10.3
Possibility of hazardous reactions
no data available
10.4
Conditions to avoid
no data available
10.5
Incompatible materials
The reaction of lithium and chromic oxide occurs around 180 deg C with consequent temperature rise to 965 deg C.
10.6
Hazardous decomposition products
no data available
SECTION 11: Toxicological information
Acute toxicity
- Oral: LD50 – rat (male) – > 15 000 mg/kg bw. Remarks:No deaths at 10 or 15 g/kg bw.
- 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: Applying the criteria for evaluating the overall weight of evidence for carcinogenicity to humans outlined in EPA’s guidelines for risk assessment (1986), trivalent chromium is most appropriately designated a Group D — Not classified as to its human carcinogenicity. Using the Proposed Guidelines for Carcinogen Risk Assessment (1996), there are inadequate data to determine the potential carcinogenicity of trivalent chromium … However, the classification of hexavalent chromium as a known human carcinogen raises a concern for the carcinogenic potential of trivalent chromium. HUMAN CARCINOGENICITY DATA: Occupational exposure to trivalent chromium and other chromium compounds by inhalation has been studied in the chromate manufacturing and ferrochromium industries; however, exposures all include mixed exposures to both Cr(III) and Cr(VI). Cr(VI) species is the likely etiological agent in reports of excess cancer risk in chromium workers. Data addressing exposures to Cr(III) alone are not available and data are inadequate for an evaluation of human carcinogenic potential. … ANIMAL CARCINOGENICITY DATA: The data from oral and inhalation exposures of animals to trivalent chromium do not support documentation of the carcinogenicity of trivalent chromium. IARC concluded that animal data are inadequate for the evaluation of the carcinogenicity of Cr(III) compounds. Furthermore, although there is sufficient evidence of respiratory carcinogenicity associated with exposure to chromium, the relative contribution of Cr(III), Cr(VI), metallic chromium, or soluble versus insoluble chromium to carcinogenicity cannot be elucidated… Chromium (III), insoluble salts
Reproductive toxicity
no data available
STOT-single exposure
May cause mechanical irritation to the eyes and respiratory tract.
STOT-repeated exposure
no data available
Aspiration hazard
A harmful concentration of airborne particles can be reached quickly when dispersed.
SECTION 12: Ecological information
12.1
Toxicity
- Toxicity to fish: LC50 – Danio rerio (previous name: Brachydanio rerio) – > 10 000 mg/L – 96 h. Remarks:’Chromoxid-gruen GN’.
- Toxicity to daphnia and other aquatic invertebrates: no data available
- Toxicity to algae: EC50 – Desmodesmus subspicatus (previous name: Scenedesmus subspicatus) – > 848.6 – 72 h.
- Toxicity to microorganisms: EC50 – activated sludge – > 10 000 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: Not dangerous goods. (For reference only, please check.) | IMDG: Not dangerous goods. (For reference only, please check.) | IATA: Not dangerous goods. (For reference only, please check.) |
14.2
UN Proper Shipping Name
| ADR/RID: Not dangerous goods. (For reference only, please check.) | IMDG: Not dangerous goods. (For reference only, please check.) | IATA: Not dangerous goods. (For reference only, please check.) |
14.3
Transport hazard class(es)
| ADR/RID: Not dangerous goods. (For reference only, please check.) | IMDG: Not dangerous goods. (For reference only, please check.) | IATA: Not dangerous goods. (For reference only, please check.) |
14.4
Packing group, if applicable
| ADR/RID: Not dangerous goods. (For reference only, please check.) | IMDG: Not dangerous goods. (For reference only, please check.) | IATA: Not dangerous goods. (For reference only, please check.) |
14.5
Environmental hazards
| ADR/RID: No | IMDG: No | IATA: No |
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 |
|---|---|---|---|
| Chromium Oxide | – | 1308-38-9 | 215-160-9 |
| 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 | Not 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 | Nov 16, 2020 |
|---|---|
| Revision Date | Nov 16, 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/
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.
