Name:
Cesium hydroxide
Synonym:
CAS:
21351-79-1
Section 1 - Chemical Product
MSDS Name:Cesium hydroxide
Synonym:
Synonym:
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
| CAS# | Chemical Name | emsds | EINECS# |
| 21351-79-1 | Cesium hydroxide | 244-344-1 |
| Hazard Symbols: C Risk Phrases: 22 35 |
Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Harmful if swallowed. Causes severe burns.
Potential Health Effects
Eye:
Contact with eyes may cause severe irritation, and possible eye burns.
Skin:
May cause severe irritation and possible burns.
Ingestion:
Not available.
Inhalation:
May cause severe irritation of the respiratory tract with sore throat, coughing, shortness of breath and delayed lung edema. Causes chemical burns to the respiratory tract.
Chronic:
Not available.
Harmful if swallowed. Causes severe burns.
Potential Health Effects
Eye:
Contact with eyes may cause severe irritation, and possible eye burns.
Skin:
May cause severe irritation and possible burns.
Ingestion:
Not available.
Inhalation:
May cause severe irritation of the respiratory tract with sore throat, coughing, shortness of breath and delayed lung edema. Causes chemical burns to the respiratory tract.
Chronic:
Not available.
Section 4 - FIRST AID MEASURES
Eyes: Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids.
Skin:
Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion:
Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
Inhalation:
Remove from exposure and move to fresh air immediately.
Notes to Physician:
Skin:
Flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Ingestion:
Do NOT induce vomiting. If conscious and alert, rinse mouth and drink 2-4 cupfuls of milk or water.
Inhalation:
Remove from exposure and move to fresh air immediately.
Notes to Physician:
Section 5 - FIRE FIGHTING MEASURES
General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear.
Extinguishing Media:
Not available.
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear.
Extinguishing Media:
Not available.
Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth), then place in suitable container.
Section 7 - HANDLING and STORAGE
Handling:
Not available.
Storage:
Not available.
Not available.
Storage:
Not available.
Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Use adequate general or local exhaust ventilation to keep airborne concentrations below the permissible exposure limits.
Exposure Limits CAS# 21351-79-1: United Kingdom, WEL - TWA: 2 mg/m3 TWA United Kingdom, WEL - STEL: 6 mg/m3 STEL Belgium - TWA: 2 mg/m3 VLE France - VME: 2 mg/m3 VME Germany: 2 mg/m3 TWA (inhalable fraction) Malaysia: 2 mg/m3 TWA Netherlands: 2 mg/m3 MAC Russia: 0.3 mg/m3 TWA Spain: 2 mg/m3 VLA-ED Personal Protective Equipment Eyes: Wear safety glasses and chemical goggles if splashing is possible.
Skin:
Wear appropriate protective gloves and clothing to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to minimize contact with skin.
Respirators:
Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions.
Use adequate general or local exhaust ventilation to keep airborne concentrations below the permissible exposure limits.
Exposure Limits CAS# 21351-79-1: United Kingdom, WEL - TWA: 2 mg/m3 TWA United Kingdom, WEL - STEL: 6 mg/m3 STEL Belgium - TWA: 2 mg/m3 VLE France - VME: 2 mg/m3 VME Germany: 2 mg/m3 TWA (inhalable fraction) Malaysia: 2 mg/m3 TWA Netherlands: 2 mg/m3 MAC Russia: 0.3 mg/m3 TWA Spain: 2 mg/m3 VLA-ED Personal Protective Equipment Eyes: Wear safety glasses and chemical goggles if splashing is possible.
Skin:
Wear appropriate protective gloves and clothing to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to minimize contact with skin.
Respirators:
Wear a NIOSH/MSHA or European Standard EN 149 approved full-facepiece airline respirator in the positive pressure mode with emergency escape provisions.
Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
Physical State: Clear liquid
Color: colorless
Odor: none reported
pH: Not available.
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: 0 deg C
Autoignition Temperature: Not available.
Flash Point: Not available.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water:
Specific Gravity/Density: 3.6800g/cm3
Molecular Formula: HCsO
Molecular Weight: 149.91
Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable under normal temperatures and pressures.
Conditions to Avoid:
Not available.
Incompatibilities with Other Materials:
Strong acids.
Hazardous Decomposition Products:
Not available.
Hazardous Polymerization: Has not been reported.
Stable under normal temperatures and pressures.
Conditions to Avoid:
Not available.
Incompatibilities with Other Materials:
Strong acids.
Hazardous Decomposition Products:
Not available.
Hazardous Polymerization: Has not been reported.
Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 21351-79-1: FK9800000 LD50/LC50:
CAS# 21351-79-1: Draize test, rabbit, skin: 5 mg/24H Mild; Oral, mouse: LD50 = 800 mg/kg; Oral, mouse: LD50 = 759 mg/kg; Oral, rat: LD50 = 570 mg/kg; Oral, rat: LD50 = 570 mg/kg.
Carcinogenicity:
Cesium hydroxide - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
CAS# 21351-79-1: FK9800000 LD50/LC50:
CAS# 21351-79-1: Draize test, rabbit, skin: 5 mg/24H Mild; Oral, mouse: LD50 = 800 mg/kg; Oral, mouse: LD50 = 759 mg/kg; Oral, rat: LD50 = 570 mg/kg; Oral, rat: LD50 = 570 mg/kg.
Carcinogenicity:
Cesium hydroxide - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
Section 12 - ECOLOGICAL INFORMATION
Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.
Section 14 - TRANSPORT INFORMATION
IATA
Not regulated as a hazardous material.
IMO
Not regulated as a hazardous material.
RID/ADR
Not regulated as a hazardous material.
Section 15 - REGULATORY INFORMATION
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: C
Risk Phrases:
R 22 Harmful if swallowed.
R 35 Causes severe burns.
Safety Phrases:
S 24/25 Avoid contact with skin and eyes.
WGK (Water Danger/Protection)
CAS# 21351-79-1: 1
Canada
CAS# 21351-79-1 is listed on Canadas DSL List.
CAS# 21351-79-1 is listed on Canadas Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 21351-79-1 is listed on the TSCA inventory.
