AMMONIUM CHROMATE

A yellow crystalline solid. Density 1.866 g / cm3. Soluble in water. Toxic by inhalation (of dust). A strong irritant. The primary hazard is the threat to the environment. Immediate steps should be taken to limit its spread to the environment. Used in dyeing, photography, chemical analysis, and as a corrosion inhibitor.

• Explosive
• Strong Oxidizing Agent

Water soluble

Special Hazards of Combustion Products: Decomposes producing toxic combustion products.

Behavior in Fire: Can explode when heated or shocked. (USCG, 1999)

INHALATION: May cause irritation or ulceration of mucous membranes. EYES: Causes severe irritation and conjunctivitis. SKIN: Irritation, ulceration (chrome sores) where breaks in skin occur. INGESTION: Tends to act as its own emetic and purgative. Can cause stomach and kidney damage if retained. (USCG, 1999)

AMMONIUM CHROMATE readily reacts with reducing materials, including large numbers of organic compounds. These reactions may be violent. A explosion hazard when shocked or heated [Lewis]. Emits toxic fumes of ammonia and nitrogen oxides when heated to decomposition [Sax, 9th ed., 1996, p. 207].

• Salts, Acidic
• Oxidizing Agents, Strong

Use caution: Liquids with this reactive group classification have been known to react with the absorbents listed below.

• Cellulose-Based Absorbents
• Expanded Polymeric Absorbents

Excerpt from 140 [Oxidizers]:

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.

LARGE SPILL: Consider initial downwind evacuation for at least 100 meters (330 feet).

FIRE: If tank, rail car or tank truck 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. If ammonium nitrate is in a tank, rail car or tank truck and involved in a fire, ISOLATE for 1600 meters (1 mile) in all directions; also, initiate evacuation including emergency responders for 1600 meters (1 mile) in all directions. (ERG, 2020)

Excerpt from 140 [Oxidizers]:

SMALL FIRE: Use water. Do not use dry chemicals or foams. CO2 or Halon® may provide limited control.

LARGE FIRE: Flood fire area with water from a distance. Do not move cargo or vehicle if cargo has been exposed to heat. If it can be done safely, move undamaged containers away from the area around the fire.

FIRE INVOLVING TANKS OR CAR/TRAILER LOADS: Fight fire from maximum distance or use unmanned master stream devices or monitor nozzles. Cool containers with flooding quantities of water until well after fire is out. ALWAYS stay away from tanks engulfed in fire. For massive fire, use unmanned master stream devices or monitor nozzles; if this is impossible, withdraw from area and let fire burn. (ERG, 2020)

Excerpt from 140 [Oxidizers]:

Keep combustibles (wood, paper, oil, etc.) away from spilled material. Do not touch damaged containers or spilled material unless wearing appropriate protective clothing. Stop leak if you can do it without risk. Do not get water inside containers.

SMALL DRY SPILL: With clean shovel, place material into clean, dry container and cover loosely; move containers from spill area.

SMALL LIQUID SPILL: Use a non-combustible material like vermiculite or sand to soak up the product and place into a container for later disposal.

LARGE SPILL: Dike far ahead of liquid spill for later disposal. (ERG, 2020)

Wear rubber gloves, industrial filter mask, face shield and safety glasses. (USCG, 1999)

No information available.

Call a physician.

INHALATION: Move to fresh air.

EYES: Flush with water.

SKIN: Wash with soap and water.

INGESTION: Dilute with water or milk. (USCG, 1999)

• AMMONIUM CHROMATE
• AMMONIUM CHROMATE ((NH4)2CRO4)
• AMMONIUM CHROMATE(VI)
• CHROMIC ACID AMMONIUM SALT
• CHROMIC ACID, AMMONIUM SALT
• DIAMMONIUM CHROMATE
• DIAMMONIUM CHROMATE ((NH4)2CRO4)
• NEUTRAL AMMONIUM CHROMATE