Rubidium Chromate








ESPI Metals

1050 Benson Way, Ashland, OR 97520

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Product Name:     Rubidium Chromate

Formula:              Rb2CrO4

CAS Number:       13446-72-5




Hazardous Components:   Rubidium Chromate

Percent (%):                     0-100

OSHA/PEL:                        0.1 mg (CrO3)/m3

ACGIH/TLV:                       0.05 mg (Cr)/m3

HMIS Rating:

Health:                              2(Chronic)

Flammability:                   0

Reactivity:                        2




Boiling Point:                  N/E

Melting Point:                 N/E

Specific Gravity:            3.518 g/cc

Solubility in H2O:            Soluble

Appearance and Odor:   Yellow powder and pieces, no odor.




Flash Point:  N/A

Autoignition Temperature: N/E

Explosive Limits: Upper: N/A            Lower: N/A

Extinguishing Media:  Use suitable extinguishing media for surrounding materials and type of fire.

Special Firefighting Procedures:  Firefighters must wear full face, self-contained breathing apparatus with full protective clothing to prevent contact with skin and eyes.  Fumes from fire are hazardous.  Isolate runoff to prevent environmental pollution.

Unusual Fire and Explosion Hazards: May emit toxic fumes if involved in a fire.




Effects of Exposure:

To the best of our knowledge the chemical, physical and toxicological properties of rubidium chromate have not been thoroughly investigated and recorded.

Rubidium is a very reactive alkali metal (more reactive than potassium or cesium).  In the body, rubidium substitutes for potassium as an intracellular ion.  The ratio Rb/K intake is important in the toxicology of rubidium.  A ratio above 40% is dangerous in rats, a failure to gain weight is the first symptom, followed by ataxia and hyper-irritability.  Symptoms include: skin ulcers, poor hair coat, sensitivity and extreme nervousness leading to convulsions and death. (Sax, Dangerous Properties of Industrial Materials)

Exposure to chromate salts has been reported to produce skin and nasal ulcerations with continued exposure leading to perforation of the nasal septa.  May cause cough, shortness of breath, headache, nausea, vomiting.

Acute Effects:

Inhalation:  May cause irritation, possibly severe.  May cause allergic reactions.  Additional effects may include fever, loss of voice, chest pain, difficulty breathing, headache, dizziness, lung congestion and kidney damage.

Ingestion:  May cause burns.  May cause allergic reactions.  Additional effects may include nausea, vomiting, digestive disorders, inability to urinate, dizziness, liver and kidney damage, convulsions, shock and coma.

Skin:  May cause irritation, possibly severe.  May cause allergic reactions.

Eye:  May cause burns.

Chronic Effects:

Inhalation:  In addition to effects from short term exposure, perforation of the nose, lack of sense of smell and taste, tooth decay, digestive disorders, asthma, perforated eardrum, lung damage and liver damage may occur.  May also cause cancer.

Ingestion:  Same as short term exposure.

Skin:  Same as acute exposure.

Eye:  Same as short term exposure.  Additional effects may include tearing and red bands around the cornea.

Target Organs:  Lungs, kidneys

Medical Conditions Generally Aggravated by Exposure: Pre-existing respiratory disorders.

Carcinogenicity:  Possible carcinogen



INHALATION:  Remove to fresh air, keep warm and quiet, give oxygen if breathing is difficult and seek medical attention.

INGESTION: Rinse out mouth and drink lots of water, seek medical attention.  Never induce vomiting or give anything by mouth to an unconscious person.

SKIN: Remove contaminated clothing, brush material off skin, wash affected area with mild soap and water, seek medical attention.

EYE:  Flush eyes with lukewarm water, lifting upper and lower eyelids, for at least 15 minutes.  Seek medical attention.




Stability:  Stable

Conditions to Avoid:  No data

Incompatibility (Materials to Avoid): Acids, strong reducing agents, organic materials.

Hazardous Decomposition Products:  Metal oxide fumes

Hazardous Polymerization:  Will not occur.




Steps to Be Taken in Case Material Is Released or Spilled: Wear appropriate respiratory and protective equipment specified in section VIII.  Isolate spill area and provide ventilation.  Vacuum up spill using a high efficiency particulate absolute (HEPA) air filter and place in a closed container for disposal.  Take care not to raise dust.  Take precautions to ensure product does not contaminate the ground or enter the drainage system.

Waste Disposal Method:  Dispose of in accordance with all Federal, State and Local regulations.




Respiratory Protection: NIOSH-approved dust-mist-vapor respirator

Ventilation: Handle in a controlled, enclosed environment.  Handle in an inert gas such as argon. Use local exhaust to maintain concentration at low exposure levels.  General exhaust is not recommended.

Protective Gloves: Rubber gloves

Eye Protection:  Safety glasses.

Other Protective Clothing or Equipment: Protective gear suitable to prevent contamination.




Precautions to Be Taken in Handling and Storing: Store in a cool, dry area.  Store in a tightly sealed container.  Wash thoroughly after handling.

Other Precautions:  Protect from moisture.

Work Practices:  Implement engineering and work practice controls to reduce and maintain concentration of exposure at low levels.  Use good housekeeping and sanitation practices.  Do not use tobacco or food in work area.  Wash thoroughly before eating and smoking.  Do not blow dust off clothing or skin with compressed air.  Maintain eyewash capable of sustained flushing, safety drench shower and facilities for washing.

TSCA Listed:                     Yes

DOT Regulations:

Hazard Class:                    5.1

Identification Number:     UN3087

Packing Group:                 II

Proper Shipping Name:    Oxidizing solid, toxic, n.o.s., (rubidium chromate)



The above information is believed to be correct, but does not purport to be all inclusive and shall be used only as a guide.  ESPI shall not be held liable for any damage resulting from handling or from contact with the above product.


Issued by:             S. Dierks

Date:                    May 2009