Chromium Oxide

Chromium Oxide


CAS No. 1308-38-9 | Chemical Formula Cr2O3

Molecular Weight 151.99 EC No. 215-160-9 MDL No. MFCD00010949

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Description

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

Specification

Application

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

MSDS

MATERIAL SAFETY DATA SHEETS

According to the UN GHS revision 8

Version: 1.0

Creation Date: Nov 16, 2020

Revision Date: Nov 16, 2020

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 nameCommon names and synonymsCAS numberEC number
Chromium Oxide1308-38-9215-160-9

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: NoIMDG: NoIATA: 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 nameCommon names and synonymsCAS numberEC number
Chromium Oxide1308-38-9215-160-9
European Inventory of Existing Commercial Chemical Substances (EINECS)Listed.
EC InventoryListed.
United States Toxic Substances Control Act (TSCA) InventoryListed.
China Catalog of Hazardous chemicals 2015Not Listed.
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 16, 2020
Revision DateNov 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.

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