Cesium Chromate







Product Name:   Cesium Chromate - powder

Formula:             Cs2CrO4

Supplier:             ESPI Metals

                            1050 Benson Way

                            Ashland, OR 97520

Telephone:          800-638-2581

Fax:                     541-488-8313

Email:                  This email address is being protected from spambots. You need JavaScript enabled to view it.

Emergency:         Infotrac 800-535-5053 (US) or 352-323-3500 (24 hour)

Recommended Uses:  Scientific Research




GHS Classification (29 CFR 1910.1200): Oxidizing solid, category 2, Sensitization - skin, category 1, Carcinogenicity, category 1B.

GHS Label Elements:


Signal Word: Danger

Hazard Statements: H272 May intensify fire; oxidizer, H317 May cause an allergic skin reaction, H350 May cause cancer.

Precautionary Statements: P201 Obtain special instructions before use, P202 Do not handle until all safety precautions have been read and understood, P210 Keep away from heat, P220 Keep/store away from clothing/reducing agents/combustible materials, P221 Take any precaution to avoid mixing with combustibles, P261 Avoid breathing dust/fume, P272 Contaminated clothing should not be allowed out of the workplace, P280 Wear protective gloves/protective clothing/eye protection/face protection, P281 Use personal protective equipment as required, P302+P352 IF ON SKIN: wash with plenty of soap and water, P308+P313 IF exposed or concerned: Get medical advice/attention, P333+P313 If skin irritation or rash occurs: Get medical advice/attention, P370+P378 In case of fire: Use water for extinction, P363 Wash contaminated clothing before reuse, P405 Store locked up, P501 Dispose of contents/container in accordance with local, state or federal regulations.




Ingredient:         Cesium Chromate

CAS#:                  13454-78-9

%:                       100

EC#:                    236-640-4

Common Names and Synonyms: Chromic acid (H2CrO4), cesium salt(1:2).




General Measures: Remove patient from area of exposure.

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

INGESTION: Rinse mouth with water. Do not induce vomiting. 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 soap and water. Seek medical attention if symptoms persist.

EYES: Flush eyes with lukewarm water, including under upper and lower eyelids, for at least 15 minutes. Seek medical attention if symptoms persist.

Most Important Symptoms/Effects, Acute and Delayed: May cause irritation. See section 11 for more information.

Indication of Immediate Medical Attention and Special Treatment: No other relevant information available.




Extinguishing Media: Use water or water spray.

Unsuitable Extinguishing Media: No information available.

Specific Hazards Arising from the Material: Not combustible, but substance is a strong oxidizer and its heat of reaction with reducing agents or combustibles may cause ignition. When heated, gives off oxygen thus increasing fire hazard. May emit toxic fumes under fire conditions.

Special Protective Equipment and Precautions for Firefighters: Full face, self-contained breathing apparatus and full protective clothing to prevent contact with skin and eyes.




Personal Precautions, Protective Equipment, and Emergency Procedures: Wear appropriate respiratory and protective equipment specified in section 8. Eliminate all sources of ignition. Isolate spill area and provide ventilation. Keep combustibles (wood, paper, oil, etc.) away from spilled material. Avoid contact with skin and eyes. Avoid breathing dust or fume.

Methods and Materials for Containment and Cleaning Up: Avoid raising dust. Cover small spills with sodium bicarbonate or soda ash and mix. Scoop or sweep up and place in a closed container for further handling and disposal.

Environmental Precautions: Do not flush to sewer, stream, or other bodies of water. Do not allow to enter drains or to be released to the environment.




Precautions for Safe Handling: Handle in an enclosed, controlled process. Avoid creating dust. Provide adequate ventilation if dusts are created. Avoid breathing dust or fumes. Avoid contact with skin and eyes. Wash thoroughly before eating or smoking. See section 8 for information on personal protection equipment.

Conditions for Safe Storage, Including Any Incompatibilities: Store in a cool, dry, well-ventilated area. Store in a tightly sealed container. Protect from water and moisture. Storage area should be free of combustibles. Do not store together with reducing agents. See section 10 for more information on incompatible materials.




Exposure Limits:                    OSHA/PEL:                                 ACGIH/TLV:

Cesium Chromate                     No exposure limit established         No exposure limit established

Chromium (VI) compounds                                                           0.05 mg/m3 (water soluble)

Chromic acid and chromates      1mg/10m3 (ceiling)

Appropriate Engineering Controls: Handle in a controlled, enclosed environment. Whenever possible the use of local exhaust ventilation or other engineering controls is the preferred method of controlling exposure to airborne dust and fume to meet established occupational exposure limits. Use good housekeeping and sanitation practices. Do not use tobacco or food in work area. Wash thoroughly before eating or smoking. Do not blow dust off clothing or skin with compressed air.

Individual Protection Measures, Such as Personal Protective Equipment:

Respiratory Protection: When potential exposures are above the occupational limits, approved respirators must be used.

Eye Protection: Safety glasses

Skin Protection: Wear impermeable gloves, protective work clothing as necessary.





Form:                   Powder

Color:                   Yellow

Odor:                    Not determined

Odor Threshold:   Not determined

pH:                                              N/A

Melting Point:                             No data

Boiling Point:                              No data

Flash Point:                                 N/A

Evaporation Rate:                       N/A

Flammability:                              No data

Upper Flammable Limit:             No data

Lower Flammable Limit:             No data

Vapor Pressure:                          No data

Vapor Density:                             N/A

Relative Density (Specific Gravity):     4.237 g/cc

Solubility in H2O:                         71.4 g/100 ml @ 13

Partition Coefficient (n-octanol/water):   Not determined

Autoignition Temperature:         No data

Decomposition Temperature:     No data

Viscosity:                                     N/A




Reactivity: No specific test data available

Chemical Stability: Stable under recommended storage conditions.

Possibility of Hazardous Reactions: Oxidizer - may intensify fire. Hazardous polymerization will not occur.

Conditions to Avoid: Protect from heat. Hygroscopic, protect from moisture.

Incompatible Materials: Reducing agents, combustible materials, organic materials.

Hazardous Decomposition Products: Chromium oxides, cesium oxides.




Likely Routes of Exposure: Inhalation, skin and eyes.

Symptoms of Exposure: May be irritating to eyes, skin and lungs. No specific information available.

Acute and Chronic Effects:

Cesium Compounds: Cesium hydroxide is irritating to eyes and skin. It is likely that this effect is the result of the caustic nature of the hydroxide rather than an effect due to cesium per se. Cesium ions block potassium channels in biological membranes in a voltage dependent manner. It has been found that replacing the potassium in the diet of rats with cesium caused death after 10-17 days.

Chromium Compounds: Chromate salts are suspected human carcinogens. Chromic acid and its salts have a corrosive action on the skin and mucous membranes. Hexavalent compounds are more toxic than the trivalent. Eczematous dermatitis due to trivalent chromium compounds has been reported.

Acute Toxicity: No available information.


Chromium (VI) Compounds: NTP: K - Known to be carcinogenic   IARC: 1 - Carcinogenic to humans




Ecotoxicity: The acute toxicity of chromium (VI) to 23 saltwater vertebrate and invertebrate species ranged from 2,000 ug/l for a polychaete worm and a mysid, to 105,000 ug/l for the mud snail. The chronic values for a polychaete ranged from <13 to 36.74 ug/l, whereas that for a mysid was 132 ug/l. The acute-chronic ratios ranged from 15.38 to >238.5. Toxicity to macro-algae was reported at 1,000 and 5,000 ug/l.

Persistence and Degradability: No data

Bioaccumulative Potential: No data

Mobility in Soil: No data

Other Adverse Effects: Do not allow material to be released to the environment. No further relevant information available.




Waste Disposal Method:

Product: Dispose of in accordance with Federal, State and Local regulations.

Packaging: Dispose of in accordance with Federal, State and Local regulations.




UN Number:                            UN1479

UN Proper Shipping Name:    Oxidizing solid, n.o.s. (Cesium Chromate)

Transport Hazard Class:        5.1

Packing Group:                       III

Marine Pollutant:                    No




TSCA Listed: Yes

DSL Listed:  No

Regulation (EC) No 1272/2008 (CLP): Oxidizing solid, category 2, Sensitization - skin, category 1, Carcinogenicity, category 1, Hazardous to the aquatic environment - acute hazard, category 2, Hazardous to the aquatic environment - chronic hazard, category 2.

WHMIS 2015 Classification: Oxidizing solids, Respiratory or skin sensitization, Carcinogenicity.

HMIS Ratings: Health: 2*(Chronic)     Flammability: 0     Physical: 2

NFPA Ratings: Health: 2     Flammability: 0     Instability: 2     Special Hazard: OX

Chemical Safety Assessment: A chemical safety assessment has not been carried out.




To the best of our knowledge the chemical, physical and toxicological characteristics of the substance are not fully known.

The information contained in this document is based on the state of our knowledge at the time of publication and is believed to be correct, but does not purport to be all inclusive and shall be used only as a guide. ESPI Metals makes no representation, warranty, or guarantee of any kind with respect to the information contained in this document or any use of the product based on this information. ESPI Metals shall not be held liable for any damages resulting from handling or from contact with the above product. Users should satisfy themselves that they have all current data relevant to their particular use.


Prepared by:             ESPI Metals

Revised/Reviewed:   December 2016