SAFETY DATA SHEET

1   PRODUCT AND SUPPLIER IDENTIFICATION

Product Name:   Cesium Sulfate

Formula:             Cs₂SO₄

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

2   HAZARDS IDENTIFICATION

GHS Classification (29 CFR 1910.1200):   Not classified as hazardous

GHS Label Elements:

Signal Word: N/A

Hazard Statements: N/A

Precautionary Statements:   N/A

3   COMPOSITION/INFORMATION ON INGREDIENTS

Ingredient:    Cesium Sulfate

CAS#:             10294-54-9

%:                  ≥99

EC#:               233-662-6

Common Names and Synonyms: Sulfuric acid, cesium salt(1:2); sulfuric acid, dicesium salt; cesium sulphate.

4   FIRST AID MEASURES

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.

5   FIREFIGHTING MEASURES

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

Unsuitable Extinguishing Media: No information available.

Specific Hazards Arising from the Material: 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.

6   ACCIDENTAL RELEASE MEASURES

Personal Precautions, Protective Equipment, and Emergency Procedures: Wear appropriate respiratory and protective equipment specified in section 8. Isolate spill area. Avoid dust formation. Avoid contact with skin and eyes. Avoid breathing dust or fume. Eliminate all sources of ignition.

Methods and Materials for Containment and Cleaning Up: Avoid creating dust. Scoop or vacuum up spill using a vacuum system equipped with a high efficiency particulate air (HEPA) filtration system and place in a properly labeled 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.

7   HANDLING AND STORAGE

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 moisture. See section 10 for more information on incompatible materials.

8   EXPOSURE CONTROLS AND PERSONAL PROTECTION

Exposure Limits:   OSHA/PEL:                               ACGIH/TLV:

Cesium Sulfate        No exposure limit established       No exposure limit established

Appropriate Engineering Controls: 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: Wear a NIOSH/MSHA approved respirator when high concentrations are present.

   Eye Protection: Safety glasses

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

9   PHYSICAL AND CHEMICAL PROPERTIES

Appearance:

Form:                 Powder

Color:                 White

Odor:                  Not determined

Odor Threshold: Not determined

pH:                                              N/A

Melting Point:                             1010 ^oC

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):     4.243 g/cc

Solubility in H₂O:                        167 g/100 ml @ 0 ^oC

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

Autoignition Temperature:         No data

Decomposition Temperature:     No data

Viscosity:                                     N/A

10   STABILITY AND REACTIVITY

Reactivity: No specific test data available.

Chemical Stability: Stable under recommended storage conditions.

Possibility of Hazardous Reactions: Hazardous polymerization will not occur.

Conditions to Avoid: Hygroscopic. Protect from moisture.

Incompatible Materials: Oxidizing agents, water/moisture.

Hazardous Decomposition Products: Cesium oxides, sulfur oxides.

11   TOXICOLOGICAL INFORMATION

Likely Routes of Exposure: Inhalation, skin and eyes.

Symptoms of Exposure: May cause irritation to eyes and abraded skin. May cause irritation to lungs.

Acute and Chronic Effects:

Cesium Compounds: Cesium hydroxide is irritating to eyes and skin. 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.

Sulfates: Sulfates have variable toxicity. In general the toxic properties of substances containing the sulfate radical is that of the material (cation) with which the sulfate (anion) is combined. Copper sulfate may be acutely toxic and corrosive, while iron sulfate is regarded as an irritant and sodium sulfate is considered non-toxic and non-irritating to skin and mucous membranes.

Acute Toxicity: LD50 oral - rat - 2830 mg/kg

Carcinogenicity: NTP: Not identified as carcinogenic   IARC: Not identified as carcinogenic

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

12   ECOLOGICAL INFORMATION

Ecotoxicity: No data

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.

13  DISPOSAL CONSIDERATIONS

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.

14   TRANSPORT INFORMATION

Shipping Regulations: Not regulated

   UN Number:                           N/A

   UN Proper Shipping Name:   N/A

   Transport Hazard Class:       N/A

   Packing Group:                      N/A

   Marine Pollutant:                   No

15   REGULATORY INFORMATION

TSCA Listed: Yes

DSL Listed: Yes

Regulation (EC) No 1272/2008 (CLP): N/A

WHMIS 2015 Classification: N/A

HMIS Ratings: Health: 1     Flammability: 0     Physical: 0

NFPA Ratings: Health: 1     Flammability: 0     Instability: 0

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

16   OTHER INFORMATION

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