Material Safety Data Sheet
EMERGENCY NUMBERS:
255 Norman.
Lachine (Montreal), Que (USA) CHEMTREC : 1(800) 424-9300 (24hrs)
H8R 1A3 (CAN) CANUTEC : 1(613) 996-6666 (24hrs)
(USA) Anachemia : 1(518) 297-4444
(CAN) Anachemia : 1(514) 489-5711
WHMIS Protective Clothing TDG Road/Rail
WHMIS CLASS : D-2B Not controlled under TDG (Canada).
PIN: Not applicable. PG: Not applicable.
Section I. Product Identification and Uses
Product name MAGNESIUM HYDROXIDE Not available.
CI#
Mg(OH)2
Chemical formula 1309-42-8
CAS#
Magnesium hydrate, AC-5544, 53728
Synonyms AC-5544
Code
58.32
Formula weight
Anachemia Canada.
Supplier Supersedes
255 Norman.
Lachine (Montreal), Que
H8R 1A3
For laboratory use only.
Material uses
Section II. Ingredients
Name CAS # % TLV
1) MAGNESIUM HYDROXIDE 1309-42-8 95-100 Not established by ACGIH
MAGNESIUM HYDROXIDE:
Toxicity values of the
ORAL (LD50): Acute: 8500 mg/kg (Rat). 8500 mg/kg (Mouse).
hazardous ingredients
INTRAPERITONEAL (LD50): Acute: 2780 mg/kg (Rat). 815 mg/kg (Mouse).
MAGNESIUM HYDROXIDE page 2/4
Section III. Physical Data
Solid. (White amorphous powder. Odorless.)
Physical state and
appearance / Odor
9.5-10.5 (aqueous slurry)
pH (1% soln/water)
Not available.
Odor threshold
0% at 21掳C
Percent volatile
Decomposes at 350掳C.
Freezing point
Not applicable.
Boiling point
2.36 (Water = 1)
Specific gravity
Not available.
Vapor density
Not available.
Vapor pressure
Not available.
Water/oil dist. coeff.
Not applicable.
Evaporation rate
Insoluble in cold water.
Solubility
Section IV. Fire and Explosion Data
Not applicable.
Flash point
Not available.
Flammable limits
Auto-ignition temperature Not available.
Magnesium oxide.
Fire degradation
products
Use DRY chemical, carbon dioxide, or alcohol-resistant foam. Wear adequate personal protection to prevent contact
Fire extinguishing
with material or its combustion products. Self contained breathing apparatus with a full facepiece operated in a pressure
procedures
demand or other positive pressure mode.
The sensitivity to static discharge is not available. The sensitivity to impact is not available. Emits toxic fumes under fire
Fire and Explosion
conditions.
Hazards
Section V. Toxicological Properties
Inhalation and ingestion. Eye contact. Skin contact.
Routes of entry
Harmful by ingestion, inhalation, or skin absorption.
Effects of Acute
Exposure
Causes irritation.
Eye
Causes skin irritation.
Skin
Material is irritating to mucous membranes and upper respiratory tract. Exposure can cause coughing, chest pains,
Inhalation
difficulty in breathing.
Laxative. Ingestion of large amounts may cause stomach pains and diarrhea.
Ingestion
MAGNESIUM HYDROXIDE page 3/4
Section V. Toxicological Properties
Carcinogenic effects: Not available. Mutagenic effects: Not available. Teratogenic effects: Not available. Toxicity of the
Effects of Chronic
product to the reproductive system: Not available. To the best of our knowledge, the chemical, physical, and toxicity of this
Overexposure
substance has not been fully investigated. Medical conditions which may be aggravated: Individuals with impaired kidney
fuction may be more susceptible to the toxicity of overexposure to this product.
Section VI. First Aid Measures
Immediately flush eyes with copious quantities of water for at least 15 minutes holding lids apart to ensure flushing of the
Eye contact
entire surface. Call a physician.
Immediately flush skin with plenty of water and soap for at least 15 minutes while removing contaminated clothing and
Skin contact
shoes. Call a physician. Wash contaminated clothing before reusing.
Remove patient to fresh air. Administer approved oxygen supply if breathing is difficult. Administer artificial respiration or
Inhalation
CPR if breathing has ceased. Call a physician.
Seek immediate medical attention. Have conscious person drink several glasses of water or milk. Induce vomiting by
Ingestion
sticking finger in throat. Lower the head so that the vomit will not reenter the mouth and throat. Seek immediate medical
attention. Never give anything by mouth to an unconscious or convulsing person.
Section VII. Reactivity Data
Unstable. Absorbs carbon dioxide from air. Conditions to avoid: High temperatures, sparks, open flames and all other
Stability
sources of ignition, contamination.
Not available.
Hazardous decomp.
products
Strong oxidizing agents, acids. Reacts violently with potassium, phosphorous, maleic anhydride.
Incompatibility
Not available. Hazardous polymerization will not occur.
Reaction Products
MAGNESIUM HYDROXIDE page 4/4
Section VIII. Preventive Measures
Wear self-contained breathing apparatus, rubber boots and heavy rubber gloves.
Protective Clothing in
case of spill and leak
Evacuate the area. Sweep up and place in container for disposal. Avoid raising dust. Ventilate area and wash spill site
Spill and leak
after material pick up is complete. DO NOT empty into drains. DO NOT touch spilled material.
According to all applicable regulations.
Waste disposal
Store in a cool place away from heated areas, sparks, and flame. Store in a well ventilated area. Store away from
Storage and Handling
incompatible materials. Do not add any other material to the container. Do not wash down the drain. Do not breathe dust.
Keep container tightly closed and dry. Manipulate under an adequate fume hood. Avoid raising dust. Empty containers
may contain a hazardous residue. Handle and open container with care. Minimize dust generation and exposure - use
dust mask or appropriate protection. This product must be manipulated by qualified personnel. Do not get in eyes, on
skin, or on clothing. Wash well after use. In accordance with good storage and handling practices. Do not allow smoking
and food consumption while handling.
Section IX. Protective Measures
Splash goggles. Impervious gloves, apron, coveralls, and/or other resistant protective clothing. Sufficient to protect skin. If use conditions generate dusts, wear a
Protective clothing
NIOSH-approved respirator appropriate for those emission levels. Appropriate respirators may be a full facepiece or a half mask air-purifying cartridge respirator
with particulate filters, a self-contained breathing apparatus in the pressure demand mode, or a supplied-air respirator. Do not wear contact lenses. Make eye
bath and emergency shower available. Ensure that eyewash station and safety shower is proximal to the work-station location.
Local mechanical exhaust ventilation capable of minimizing dust emissions at the point of use. Do not use in unventilated
Engineering controls
spaces.
Section X. Other Information
Special Precautions or Irritant! Do not breathe dust. Avoid all contact with the product. Avoid prolonged or repeated
exposure. Use only in a chemical fume hood. Handle and open container with care.
comments
Container should be opened only by a technically qualified person.
RTECS NO: OM3570000.
NFPA
Prepared by MSDS Department/D茅partement de F.S.. Validated 16-Nov-2000
Telephone# (514) 489-5711
While the company believes the data set forth herein are accurate as of the date hereof, the company makes no warranty with respect thereto
and expressly disclaims all liability for reliance thereon. Such data are offered solely for your consideration, investigation and verification.
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