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MSDS 
:
 Calcium hydroxide, reagent ACS
CAS 
:
 1305-62-0
SYNONYMS 
:
 Biocalc; Calcium hydrate; Calcium dihydrate; Carboxide; Calcium     dihydroxide; Caustic lime; Hydrated lime; Slaked lime; Kalkhydrate;     Lime water; Lime milk
**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
| 1305-62-0 |Calcium hydroxide | >95 | 215-137-3 |
+----------------+--------------------------------------+----------+-----------+
Hazard Symbols: C
Risk Phrases: 34

**** SECTION 3 - HAZARDS IDENTIFICATION ****

EMERGENCY OVERVIEW
Causes burns.Corrosive.

Potential Health Effects
Eye:
Contact with liquid or vapor causes severe burns and possible
irreversible eye damage. May cause temporary corneal clouding.
Skin:
Causes severe skin irritation and burns. May be harmful if absorbed
through the skin.
Ingestion:
Causes gastrointestinal tract burns. May cause circulatory system
failure. May cause perforation of the digestive tract. Causes severe
pain, nausea, vomiting, diarrhea, and shock. Effects may be delayed.
Inhalation:
May cause burns to the respiratory tract. Inhalation may be fatal as
a result of spasm, inflammation, edema of the larynx and bronchi,
chemical pneumonitis and pulmonary edema. Inhalation may produce
burning sensation, coughing, wheezing, laryngitis, shortness of
breath, headache, nausea, and vomiting.
Chronic:
Prolonged or repeated skin contact may cause dermatitis. Chronic
inhalation and ingestion may cause effects similar to those of acute
inhalation and ingestion. Prolonged or repeated exposure may cause
corneal damage and the development of cataracts and glaucoma.

**** 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. Get medical aid
immediately. Do NOT allow victim to rub eyes or keep eyes closed.
Extensive irrigation with water is required (at least 30 minutes).
Skin:
Get medical aid immediately. Immediately flush skin with plenty of
water for at least 15 minutes while removing contaminated clothing
and shoes. Wash clothing before reuse. Destroy contaminated shoes.
Ingestion:
Never give anything by mouth to an unconscious person. Get medical
aid immediately. Do NOT induce vomiting. If conscious and alert,
rinse mouth and drink 2-4 cupfuls of milk or water.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh
air immediately. If breathing is difficult, give oxygen. Do not use
mouth-to-mouth resuscitation if victim ingested or inhaled the
substance; induce artificial respiration with the aid of a pocket
mask equipped with a one-way valve or other proper respiratory
medical device.
Notes to Physician:
Effects may be delayed. Treat symptomatically and supportively.

**** 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. During a fire, irritating and highly toxic gases
may be generated by thermal decomposition or combustion. Substance
is nonflammable. Vapors may be heavier than air. They can spread
along the ground and collect in low or confined areas. Runoff from
fire control or dilution water may cause pollution.
Extinguishing Media:
In case of fire, use carbon dioxide, dry chemical powder or
appropriate foam.

**** SECTION 6 - ACCIDENTAL RELEASE MEASURES ****

General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal
container. Avoid generating dusty conditions. Provide ventilation.

**** SECTION 7 - HANDLING and STORAGE ****

Handling:
Wash thoroughly after handling. Remove contaminated clothing and
wash before reuse. Use with adequate ventilation. Avoid contact with
eyes, skin, and clothing. Keep container tightly closed. Avoid
breathing dust.
Storage:
Store in a tightly closed container. Store in a cool, dry,
well-ventilated area away from incompatible substances. Corrosives
area. Do not exceed 30C (86F).

**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****

Engineering Controls:
Facilities storing or utilizing this material should be equipped
with an eyewash facility and a safety shower. Use adequate general or
local exhaust ventilation to keep airborne concentrations below the
permissible exposure limits.
Exposure Limits
CAS# 1305-62-0:
United Kingdom, WEL - TWA: 5 mg/m3 TWA
United Kingdom, WEL - STEL: 15 mg/m3 STEL
United States OSHA: 15 mg/m3 TWA (total dust); 5 mg/m3 TWA
(respirable fraction)
Belgium - TWA: 5 mg/m3 VLE
France - VME: 5 mg/m3 VME
Germany: 5 mg/m3 TWA (inhalable fraction)
Malaysia: 5 mg/m3 TWA
Netherlands: 5 mg/m3 MAC
Spain: 5 mg/m3 VLA-ED

Personal Protective Equipment

Eyes:
Wear chemical splash goggles.
Skin:
Wear appropriate protective gloves to prevent skin
exposure.
Clothing:
Wear appropriate protective clothing to prevent skin
exposure.
Respirators:
A respiratory protection program that meets OSHA's 29
CFR 1910.134 and ANSI Z88.2 requirements or European
Standard EN 149 must be followed whenever workplace
conditions warrant respirator use.

**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****

Physical State: Powder
Color: white
Odor: odorless
pH: 12.4(sat.soln.@25C)
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: decomposes
Freezing/Melting Point: 580 deg C
Autoignition Temperature: Not applicable.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: Not available.
Solubility in water: Soluble.
Specific Gravity/Density: 2.2400g/cm3
Molecular Formula: CaH2O2
Molecular Weight: 74.09

**** SECTION 10 - STABILITY AND REACTIVITY ****

Chemical Stability:
Stable at room temperature in closed containers under normal storage
and handling conditions. Readily absorbs carbon dioxide from air
forming calcium carbonate.
Conditions to Avoid:
Dust generation, temperatures above 30C.
Incompatibilities with Other Materials:
Phosphorus, maleic anhydride, nitromethane, nitroethane,
nitroparaffins, nitropropane, polychlorinated phenols + postassium
nitrate.
Hazardous Decomposition Products:
Calcium oxide.
Hazardous Polymerization: Has not been reported.

**** SECTION 11 - TOXICOLOGICAL INFORMATION ****

RTECS#:
CAS# 1305-62-0: EW2800000
LD50/LC50:
CAS# 1305-62-0: Draize test, rabbit, eye: 10 mg Severe; Oral, mouse:
LD50 = 7300 mg/kg; Oral, rat: LD50 = 7340 mg/kg.
Carcinogenicity:
Calcium hydroxide -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

**** SECTION 12 - ECOLOGICAL INFORMATION ****

Ecotoxicity:
Mosquito fish, TLm=240 ppm/24H, 220 ppm/48H, 160 ppm/96H at 21-23C.

**** SECTION 13 - DISPOSAL CONSIDERATIONS ****

Dispose of in a manner consistent with federal, state, and local regulations.

**** SECTION 14 - TRANSPORT INFORMATION ****

IATA
Shipping Name: CORROSIVE SOLID, BASIC, INORGANIC, N.O.S.*
Hazard Class: 8
UN Number: 3262
Packing Group: III
IMO
Shipping Name: CORROSIVE SOLID, BASIC, INORGANIC, N.O.S.
Hazard Class: 8
UN Number: 3262
Packing Group: III
RID/ADR
Shipping Name: CORROSIVE SOLID, BASIC, INORGANIC, N.O.S.
Hazard Class: 8
UN Number: 3262
Packing group: III

**** SECTION 15 - REGULATORY INFORMATION ****

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: C
Risk Phrases:
R 34 Causes burns.
Safety Phrases:
S 26 In case of contact with eyes, rinse immediately
with plenty of water and seek medical advice.
S 28A After contact with skin, wash immediately with
plenty of water.
WGK (Water Danger/Protection)
CAS# 1305-62-0: 1
Canada
CAS# 1305-62-0 is listed on Canada's DSL List.
CAS# 1305-62-0 is listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 1305-62-0 is listed on the TSCA inventory.

**** SECTION 16 - ADDITIONAL INFORMATION ****

MSDS Creation Date: 6/16/1999 Revision #3 Date: 3/04/2004

The information above is believed to be accurate and represents the best
information currently available to us. However, we make no warranty of
merchantability or any other warranty, express or implied, with respect to
such information, and we assume no liability resulting from its use. Users
should make their own investigations to determine the suitability of the
information for their particular purposes. In no way shall the company be
liable for any claims, losses, or damages of any third party or for lost
profits or any special, indirect, incidental, consequential or exemplary
damages, howsoever arising, even if the company has been advised of
the possibility of such damages.
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