Print
Chemical Datasheet
SODIUM CHROMATE SOLUTION |
|
Chemical Identifiers
CAS Number |
UN/NA Number |
DOT Hazard Label |
USCG CHRIS Code |
|
|
|
none
|
NIOSH Pocket Guide |
International Chem Safety Card |
Chromic acid and chromates
|
|
NFPA 704
data unavailable
General Description
Sodium chromate is a yellow crystalline solid dissolved in a liquid medium, probably water. It is soluble in water. It is toxic by inhalation, ingestion and/or skin contact. It is noncombustible. It is used to make pigments for paints and inks, other chemicals, and as a wood preservative.
Hazards
Reactivity Alerts
Air & Water Reactions
Water soluble.
Fire Hazard
Excerpt from ERG Guide 151 [Substances - Toxic (Non-Combustible)]:
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Containers may explode when heated. Runoff may pollute waterways. (ERG, 2024)
Health Hazard
Excerpt from ERG Guide 151 [Substances - Toxic (Non-Combustible)]:
Highly toxic, may be fatal if inhaled, ingested or absorbed through skin. Avoid any skin contact. Fire may produce irritating, corrosive and/or toxic gases. Runoff from fire control or dilution water may be corrosive and/or toxic and cause environmental contamination. (ERG, 2024)
Reactivity Profile
SODIUM CHROMATE is a strong oxidizer. This chemical absorbs moisture from the atmosphere. Incompatible with strong acids (NTP, 1992). In contact with combustible materials may cause fire. Toxic chromium oxide fumes may form in fire (USCG, 1999).
Belongs to the Following Reactive Group(s)
- Salts, Basic
- Oxidizing Agents, Strong
- Water and Aqueous Solutions
Potentially Incompatible Absorbents
Use caution: Liquids with this reactive group classification have been
known to react with the
absorbents
listed below.
- Cellulose-Based Absorbents
- Expanded Polymeric Absorbents
Response Recommendations
Isolation and Evacuation
Excerpt from ERG Guide 151 [Substances - Toxic (Non-Combustible)]:
IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
SPILL: Increase the immediate precautionary measure distance, in the downwind direction, as necessary.
FIRE: If tank, rail tank car or highway tank is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2024)
Firefighting
Excerpt from ERG Guide 151 [Substances - Toxic (Non-Combustible)]:
SMALL FIRE: Dry chemical, CO2 or water spray.
LARGE FIRE: Water spray, fog or regular foam. If it can be done safely, move undamaged containers away from the area around the fire. Dike runoff from fire control for later disposal. Avoid aiming straight or solid streams directly onto the product.
FIRE INVOLVING TANKS, RAIL TANK CARS OR HIGHWAY TANKS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Do not get water inside containers. Cool containers with flooding quantities of water until well after fire is out. Withdraw immediately in case of rising sound from venting safety devices or discoloration of tank. ALWAYS stay away from tanks in direct contact with flames. For massive fire, use unmanned master stream devices or monitor nozzles; if this is impossible, withdraw from area and let fire burn. (ERG, 2024)
Non-Fire Response
Excerpt from ERG Guide 151 [Substances - Toxic (Non-Combustible)]:
Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Prevent entry into waterways, sewers, basements or confined areas. Cover with plastic sheet to prevent spreading. Absorb or cover with dry earth, sand or other non-combustible material and transfer to containers. DO NOT GET WATER INSIDE CONTAINERS. For solids, prevent dust cloud and avoid inhalation of dust. (ERG, 2024)
Protective Clothing
Excerpt from ERG Guide 151 [Substances - Toxic (Non-Combustible)]:
Wear positive pressure self-contained breathing apparatus (SCBA). Wear chemical protective clothing that is specifically recommended by the manufacturer when there is NO RISK OF FIRE. Structural firefighters' protective clothing provides thermal protection but only limited chemical protection. (ERG, 2024)
DuPont Tychem® Suit Fabrics
No information available.
First Aid
Excerpt from ERG Guide 151 [Substances - Toxic (Non-Combustible)]:
Refer to the "General First Aid" section. (ERG, 2024)
Physical Properties
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point: data unavailable
Vapor Pressure: data unavailable
Vapor Density (Relative to Air): data unavailable
Specific Gravity: data unavailable
Boiling Point: data unavailable
Molecular Weight: data unavailable
Water Solubility: data unavailable
Ionization Energy/Potential: data unavailable
IDLH:
15 mg Cr(VI)/m3
; A potential occupational carcinogen.
(NIOSH, 2024)
AEGLs (Acute Exposure Guideline Levels)
No AEGL information available.
ERPGs (Emergency Response Planning Guidelines)
No ERPG information available.
PACs (Protective Action Criteria)
Chemical |
PAC-1 |
PAC-2 |
PAC-3 |
Sodium chromate(VI); (Disodium chromate) (7775-11-3)
|
0.47 mg/m3 |
8.2 mg/m3 |
49 mg/m3 |
(DOE, 2024)
Regulatory Information
EPA Consolidated List of Lists
Regulatory Name |
CAS Number/ 313 Category Code |
EPCRA 302 EHS TPQ |
EPCRA 304 EHS RQ |
CERCLA RQ |
EPCRA 313 TRI |
RCRA Code |
CAA 112(r) RMP TQ |
Chromium Compounds |
N090 |
|
|
& |
313 |
|
|
Sodium chromate |
7775-11-3 |
|
|
10 pounds |
313c |
|
|
(EPA List of Lists, 2024)
CISA Chemical Facility Anti-Terrorism Standards (CFATS)
No regulatory information available.
OSHA Process Safety Management (PSM) Standard List
No regulatory information available.
Alternate Chemical Names
- CHROMIUM DISODIUM OXIDE
- CHROMIUM SODIUM OXIDE (CRNA2O4)
- DISODIUM CHROMATE
- DISODIUM CHROMATE (NA2CRO4)
- SODIUM CHROMATE
- SODIUM CHROMATE (NA2(CRO4))
- SODIUM CHROMATE (NA2CRO4)
- SODIUM CHROMATE SOLUTION
- SODIUM CHROMIUM OXIDE (NA2CRO4)