MATERIAL SAFETY DATA SHEET

I.   PRODUCT IDENTIFICATION

Manufacturer/Supplier:

ESPI Metals

1050 Benson Way, Ashland, OR 97520

Toll Free (800) 638-2581 * Fax (541) 488-8313

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Product Name:      Cesium Chromate

Formula:               Cs₂CrO₄

CAS Number:        56320-90-2

II.   HAZARDOUS INGREDIENTS

Hazardous Components:  Cesium Chromate

Percent (%):                    0-100

OSHA/PEL:                        0.1 mg (CrO₃)/m³

ACGIH/TLV:                      0.05 mg (Cr)/m³

HMIS Ratings:

Health:                            3

Flammability:                 0

Reactivity:                      0

III.   PHYSICAL DATA

Boiling Point:                    N/A

Melting Point:                   N/A

Specific Gravity:              4.237 g/cc

Solubility in H₂O:             Soluble

Appearance and Odor:    Yellow rhombic crystals

IV.   FIRE AND EXPLOSION HAZARDS DATA

Flash Point:  N/A

Autoignition Temperature:  N/A

Flammable Limits:  Upper:  N/A       Lower:  N/A

Extinguishing Media:  Use water.  Do not use dry powder, carbon dioxide or halogenated extinguishing agents.  For larger fires flood area with water from a distance.

Special Fire Fighting Procedures:  Firefighters must wear full face, self contained breathing apparatus and protective clothing.  Fumes from fire are hazardous.  Isolate runoff to prevent environmental pollution.  Move container from fire area if you can do so without risk.  Apply cooling water to sides of containers that are exposed to flames well after the fire has been extinguished.  Avoid breathing corrosive vapors or dusts.

Fire and Explosion Hazards:  Negligible fire hazard.  Oxidizer.  May ignite or explode on contact with combustible materials.

V.   HEALTH HAZARD INFORMATION

Effects of Exposure:

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

Cesium compounds may cause hyper-irritability, including spasms, dizziness, abdominal cramps, vomiting, diarrhea, convulsions and collapse.  Chronic ingestion of cesium has been fatal to laboratory animals, possibly due to the replacement of potassium.  Chronic exposure also can have blood and neuromuscular effects.

Chromates may cause ulceration and perforation of the nasal septum, liver and kidney damage, and ulceration of the skin.  Hexavalent chromium may cause skin ulceration, gastrointestinal irritation with vomiting and diarrhea, kidney and liver damage.  Overexposure may be fatal.  Dusts are extremely irritating to the eyes, nose, throat and bronchial tubes.  May cause cancers of the lungs, nasal cavity, sinuses, stomach and larynx.

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.

Carcinogenicity:  NTP:  Yes              IARC:  Yes            ACGIH:  Yes         EPA:  Yes

EMERGENCY AND FIRST AID PROCEDURES:

INHALATION:  Remove to fresh air, keep warm and quiet, give oxygen if breathing is difficult.  SEEK MEDICAL ATTENTION IMMEDIATELY!

INGESTION:  Remove by gastric lavage or emesis.  Maintain blood pressure and airway.  Give oxygen if respiration is depressed. Do not perform gastric lavage or emesis if victim is unconscious.  SEEK MEDICAL ATTENTION IMMEDIATELY!!! Administration of gastric lavage or oxygen should be performed by qualified medical personnel.

SKIN:  Remove contaminated clothing, brush material off skin, wash affected area with mild soap and water for at least 15 minutes.  If burns occur, proceed with the following:  Cover affected area securely with sterile, dry, loose-fitting dressing.  Treat symptomatically and supportively.  Seek medical attention immediately.

EYE:  Flush with lukewarm water, lifting upper and lower eyelids for at least 15 minutes.  Continue irrigating with normal saline until the pH has returned to normal (30-60 minutes).  SEEK MEDICAL ATTENTION IMMEDIATELY.

Note To Physician:  Antidote:  The following antidote has been recommended.  However, the decision as to whether the severity of poisoning requires administration of any antidote and actual dose required should be made by qualified medical personnel.  Use of dimercaprol has been suggested on the basis of findings in animals.  Give 3 mg/kg (or 0.3 ml/10 kg) every 4 hours, intramuscularly for the first 2 days and then 2 mg/kg every 12 hours for a total of 10 days (Dreisbach, Handbook of Poisoning, 12^th Ed.)  Antidote should only be administered by qualified medical personnel.

VI.   REACTIVITY DATA

Stability:  Stable at normal temperatures and pressures.

Conditions to Avoid:  Avoid contact with combustible materials.  May ignite or explode on contact with combustible materials.  Dangerous gases may accumulate in confined spaces.  Keep out of water supplies and sewers.

Incompatibility (Material to Avoid):  Combustible materials, reducing agents, acids.

Hazardous Decomposition Products:  Oxides of chromium.

Hazardous Polymerization:  Will not occur

VII.   SPILL OR LEAK PROCEDURES

Steps to Be Taken in Case Material Is Released or Spilled:  Keep combustibles (wood, paper, oil, etc...) away from spilled material.  Do not touch spilled material.  Stop leak if you can do so without risk.  Use water spray to reduce vapors.  Do not get water inside container.  For small dry spills, use a clean shovel to place material into a clean, dry containers and cover.  Move containers from spill area.  For small liquid spills, flush area with flooding amounts of water.  For larger spills, dike far ahead of spill for later disposal.  Keep unnecessary people away.  Isolate hazard area and deny entry.  In the event of a water spill note that the California Safe Drinking Water and Toxic Enforcement Act of 1986 (Proposition 65) prohibits contaminating any known source of drinking water with substances known to cause cancer and/or reproductive toxicity.

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

VIII.   SPECIAL PROTECTION INFORMATION

Respirator:  Any self-contained breathing apparatus that has a full face piece and is operated in a pressure-demand or other positive-pressure mode.

Ventilation:  Provide local exhaust or process enclosure ventilation to meet published exposure limits.

Protective Gloves:  Employee must wear appropriate protective gloves to prevent contact with this substance.

Eye Protection:  Employee must wear splash-proof or dust-resistant safety goggles and a face shield to prevent contact with this substance.  Where there is any possibility that an employee's eyes and/or skin may be exposed to this substance, the employer should provide an eye wash fountain and quick drench shower within the immediate work area for emergency use.

Other Protective Clothing:  Employee must wear appropriate protective (impervious) clothing and equipment to prevent any possibility of skin contact with this substance.

IX.   SPECIAL PRECAUTIONS

Precautions to Be Taken in Handling and Storage:  Store and handle in accordance with all current regulations and standards.  NFPA 430 Code for the storage of liquid and solid oxidizing materials.  Keep separated from incompatible substances.  Store in tightly sealed containers.

Other Precautions:  Contact with combustible material may cause fire.  May cause sensitization by inhalation.  May cause sensitization by skin contact.  May cause cancer by inhalation.  May cause harm to breast-fed babies.  Keep out of reach of children.

Avoid contact with skin.  If swallowed, seek medical advice immediately.

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:                  III

Proper Shipping Name:     Oxidizing solid, toxic, n.o.s., (cesium 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

Revised/Verified:                  December 2011