Chromium trioxide
Synonyms: Chromic acid, CrO3
SECTION 1: Identification of the substance/mixture and of the company/undertaking
Chemical Name
Chromium trioxide
Product Form
Substance
Catalogue No.
AL1381
CAS Number
1333-82-0
EC Number
215-607-8
EC Index Number
CrO3
Grade
98%
HSN Code
28191000
Molecular Formula
CrO3
SECTION 1: Identification of the substance/mixture and of the company/undertaking
1.1 Product identifier
Chemical Name
Chromium trioxide
Catalogue No.
AL1381
Product form
Substance
CAS Number
1333-82-0
EC Number
215-607-8
Grade
98%
EC Index Number
CrO3
Chemical Formula
CrO3
HSN Code
28191000
Synonyms
Chromic acid, CrO3
Chemical Structure
-
1.2 Relevant identified uses of the substance or mixture and uses advised against
Use of the substance/mixture
Oxidizing agent in chrome plating and organic synthesis.
Uses advised against
Not specified
1.3 Details of the supplier of the safety data sheet
Company identification
Address:- 102, B wing, Savgan Heights, RTO Lane,Andheri (W), Mumbai-400 053Maharashtra, India.
1.4 Emergency Contact Details
Phone / e-Mail
Phone : +91 22 26317055 Mobile : +91 9820385757 e-mail : info@alphachemika.co.in
SECTION 2: Hazards identification
2.1 Classification of the substance or mixture
Classification according to Regulation (EC) No 1272/2008
Ox. Sol. 1; Acute Tox. 3; Skin Corr. 1A; Skin Sens. 1; Acute Tox. 2; Resp. Sens. 1; Muta. 1B; Carc. 1A; Repr. 2; STOT RE 1; Aquatic Acute 1; Aquatic Chronic 1
Classification source
ECHA C&L Inventory via PubChem CID 14915 - hazard classes notified by at least 50% of companies; pictograms and signal word derived from those statements
2.2 Label elements
Hazard pictograms
Oxidizer, Corrosive, Acute Toxic, Health Hazard, Environmental Hazard
Signal word
Danger
Hazard statements
H271: May cause fire or explosion; strong Oxidizer; H301: Toxic if swallowed; H314: Causes severe skin burns and eye damage; H317: May cause an allergic skin reaction; H330: Fatal if inhaled; H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled; H340: May cause genetic defects; H350: May cause cancer; H361: Suspected of damaging fertility or the unborn child; H372: Causes damage to organs through prolonged or repeated exposure; H400: Very toxic to aquatic life; H410: Very toxic to aquatic life with long lasting effects
2.3 Other hazards
Other hazards
Known human carcinogen (hexavalent chromium).
SECTION 3: Composition/information on ingredients
3.1 Substance
Name
Chromium trioxide
CAS No.
1333-82-0
SECTION 4: First aid measures
4.1 Description of first aid measures
First-aid measures after inhalation
If this chemical has been inhaled, remove the exposed person to fresh air at once. If breathing has stopped, perform artificial respiration. Keep the person warm and at rest.
First-aid measures after skin contact
If this chemical contacts the skin, immediately flush the contaminated skin with soap and water. If this chemical penetrates the clothing, immediately remove the clothing and flush the skin with water. If irritation persists after washing, get medical attention.
First-aid measures after eye contact
If this chemical contacts the eyes, immediately wash (irrigate) the eyes with large amounts of water, occasionally lifting the lower and upper lids. Get medical attention immediately.
First-aid measures after ingestion
If this chemical has been swallowed, get medical attention immediately.
4.2 Most important symptoms and effects, both acute and delayed
Symptoms relating to use
Coughing, shortness of breath, skin irritation, eye irritation.
4.3 Indication of any immediate medical attention and special treatment needed
General information
Treat symptomatically. Show this safety data sheet to the treating physician.
SECTION 5: Fire-fighting measures
5.1 Extinguishing media
Suitable extinguishing media
Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.
Unsuitable extinguishing media
Not specified
5.2 Special hazards arising from the substance or mixture
Special procedures
If involved in a fire decomposes to produce chromium fumes.
5.3 Advice for firefighters
Protection during firefighting
Do not enter fire area without proper protective equipment, including respiratory protection.
SECTION 6: Accidental release measures
6.1.1 For non-emergency personnel
Emergency procedures
Evacuate area and ventilate. Wear appropriate protective equipment.
6.3 Methods and material for containment and cleaning up
Methods for cleaning up
Personal protection: complete protective clothing including self-contained breathing apparatus. Do NOT let this chemical enter the environment. Sweep spilled substance into sealable containers. If appropriate, moisten first to prevent dusting.
6.4 Reference to other sections
Reference
Not specified
SECTION 7: Handling and storage
7.1 Precautions for safe handling
Precautions for safe handling
Use personal protective equipment. Avoid contact with skin and eyes. Use in a fume hood.
Hygiene measures
Wash hands and other exposed areas with mild soap and water before eating, drinking or smoking and when leaving work.
7.2 Conditions for safe storage, including any incompatibilities
Storage conditions
Provision to contain effluent from fire extinguishing. Separated from combustible substances, reducing agents, bases and food and feedstuffs. Well closed. Store in an area without drain or sewer access.
SECTION 8: Exposure controls/personal protection
8.2 Exposure controls
Hand protection
Handle with gloves.
Eye protection
Face shield and safety glasses. Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).
Skin and body protection
Wear suitable protective clothing
Respiratory protection
Use appropriate respiratory protection when handling.
SECTION 9: Physical and chemical properties
9.1 Information on basic physical and chemical properties
Physical state
Solid
Colour
Dark red to purple-red
Odour
Odorless
Odour threshold
Not applicable
pH value
Not applicable
Relative evaporation rate (butylacetate=1)
Not applicable
Melting point
197 °C
Freezing point
Not applicable
Boiling point
Approximately 250 °C decomposes
Flash point
Not applicable
Auto-ignition temperature
Not applicable
Decomposition temperature
> 200 °C
Flammability (solid, gas)
Not flammable
Vapour pressure
Very low
Relative vapour density at 20°C
Not applicable
Density
2.70
Solubility
Solubility in water, 61.7 g100 cc solution at 0 °C; 67.45 g100 cc solution at 100 °C
Log Pow
Not applicable
Viscosity, kinematic
Not applicable
Viscosity, dynamic
Not applicable
Explosive properties
Not explosive
Oxidising properties
Strong oxidizer
Explosive limits
Not applicable
SECTION 10: Stability and reactivity
10.1 Reactivity
Reactivity
Reacts violently with reducing agents and organic materials.
10.2 Chemical stability
Chemical stability
Stable under recommended storage conditions.
10.3 Possibility of hazardous reactions
Possibility of hazardous reactions
Decomposes above 250 °C . This produces chromic oxide and oxygen. This increases fire hazard. The substance is a strong oxidant.
10.4 Conditions to avoid
Conditions to avoid
Avoid contact with incompatible materials and excessive heat.
10.5 Incompatible materials
Incompatible materials
Reducing agents, organic materials, acids.
10.6 Hazardous decomposition products
Hazardous decomposition products
Decomposes at 250 °C to chromic oxide and oxygen.
SECTION 11: Toxicological information
11.1 Information on toxicological effects
Acute toxicity
LD50 Rat oral 135-177 mg chromic trioxide/kg.; LD50 Rat oral 80 mg/kg; LD50 mouse oral 80-114 mg chromic trioxide/kg.
Skin corrosion/irritation
H314: Causes severe skin burns and eye damage
Serious eye damage/irritation
Not classified (based on available data)
Respiratory or skin sensitisation
H317: May cause an allergic skin reaction; H334: May cause allergy or asthma symptoms or breathing difficulties if inhaled
Germ cell mutagenicity
H340: May cause genetic defects
Carcinogenicity
H350: May cause cancer
Specific target organ toxicity (single exposure)
Not classified (based on available data)
Specific target organ toxicity (repeated exposure)
H372: Causes damage to organs through prolonged or repeated exposure
SECTION 12: Ecological information
12.1 Toxicity
Toxicity information
Not specified
12.2 Persistence - degradability
Persistence - degradability
Not specified
12.3 Bioaccumulative potential
Bioaccumulative potential
Not specified
12.4 Mobility in soil
Mobility in soil
Not specified
12.6 Other adverse effects
Environmental precautions
Not specified
SECTION 13: Disposal considerations
13.1 Waste treatment methods
Additional Info
Dispose of contents/container in accordance with local, regional, national and international regulations.
SECTION 14: Transport information
14.1 UN number
UN-No. (ADR)
UN 1463
UN-No. (IMDG)
UN 1463
UN-No. (IATA)
UN 1463
UN-No. (ADN)
UN 1463
UN-No. (RID)
UN 1463
14.2 UN proper shipping name
Proper Shipping Name (ADR)
Chromium trioxide
Proper Shipping Name (IMDG)
Chromium trioxide
Proper Shipping Name (IATA)
Chromium trioxide
Proper Shipping Name (ADN)
Chromium trioxide
Proper Shipping Name (RID)
Chromium trioxide
14.3 Transport hazard class(es)
Transport hazard class(es)
5.1 (6.1,8)
14.4 Packing group
Packing group (ADR)
II
Packing group (IMDG)
II
Packing group (IATA)
II
Packing group (ADN)
II
Packing group (RID)
II
14.5 Environmental hazards
Dangerous for the environment
Not specified
Marine pollutant
Not specified
Other information
No supplementary information available
SECTION 15: Regulatory information
15.1 Safety, health and environmental regulations/legislation specific for the substance or mixture
15.1.1 EU-Regulations
Not specified
SECTION 16: Other Information
Disclaimer
The information provided in this Safety Data Sheet is correct to the best of our knowledge, information and belief at the date of its publication. The information is designed only as a guidance for safe handling, use, processing, storage, transportation, disposal and release and is not to be considered a guarantee or quality specification. The information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any process, unless specified in the text.