MATERIAL SAFETY DATA SHEET
MONTEREY MAGNESIUM SULFATE Page 1 of 4 Issue Date: 01/06
SECTION 1. PRODUCT AND COMPANY IDENTIFICATION
Chemical Product
MONTEREY MAGNESIUM SULFATE
Common Name: Magnesium sulfate heptahydrate.
Chemical Description: Magnesium sulfate, powder.
TSCA/CAS No.: The primary CAS number is 10034-99-8.
Manufactured For
Monterey AgResources
P. O. Box 35000
Fresno, CA 93745-5000
Emergency Phone Numbers
Emergency Telephone: DAYS: (559) 499-2100 EVES: (559) 994-9144
CHEMTREC (24-Hour Emergency Number): (800) 424-9300
EPA National Response Center: (800) 424-8802
SECTION 2. HAZARDOUS INGREDIENTS
CHEMICAL CAS NO. % TLV OR PEL RQ (lbs)
Magnesium sulfate, heptahydrate 10034-99-8 100.0 N.A.* N.P.*
Under the Toxic Substances Control Act (TSCA) , hydrates are considered as mixtures of their
anhydrous salt and water. Accordingly, CAS Numbers 7487-88-9 and 7732-18-5 are used
for purposes of TSCA
*N.A. - Not Applicable.
*N.P. - Not Pertinent.
SECTION 3. EMERGENCY/HAZARDS OVERVIEW
White crystalline powder with no odor. At very high temperatures, magnesium oxide, sulfur
dioxide and sulfur trioxide may be generated. Not D.O.T. regulated.
HEALTH: 1 REACTIVITY: 1 FLAMMABILITY: 0 ENVIRONMENT: 1
(0=Insignificant 1=Slight 2=Moderate 3=High 4=Extreme)
SECTION 4. FIRST AID
Eyes: Flush with water for at least 15 minutes. Call a physician if eye irritation
persists.
Skin: Wash thoroughly with soap and water. Remove contaminated clothing and wash
before reuse. See a physician if skin becomes irritated.
Ingestion: If large quantities of this material are swallowed, call a physician or Poison
Control Center immediately. Do NOT induce vomiting unless directed to do so
by a physician. Never give anything by mouth to an unconscious person.
Inhalation: Move to fresh air. If breathing becomes difficult, call a physician.
MONTEREY MAGNESIUM SULFATE Page 2 of 4 Issue Date: 01/06
SECTION 5. FIRE AND EXPLOSION HAZARDS
Flash Point: Noncombustible.
Test Method: Not pertinent.
LEL Flammable Limits: Not pertinent.
UEL Flammable Limits: Not pertinent.
Autoignition Temperature: Not pertinent.
Flammability Classification: Noncombustible.
Known Hazardous Products of Combustion: None.
Properties that Initiate/Contribute to Intensity of Fire: None.
Potential For Dust Explosion: None.
Reactions that Release Flammable Gases or Vapors: None.
Potential For Release of Flammable Vapors: None.
Unusual Fire & Explosion Hazards: At very high temperatures, magnesium
oxide, sulfur dioxide and sulfur trioxide
may be generated.
Extinguishing Media: This material is compatible with all
extinguishing materials.
Special Firefighting Procedures: Wear positive pressure, self-contained
breathing apparatus and goggles.
Contain any liquid runoff.
SECTION 6. SPILLS AND LEAKS
Containment: Prevent product spillage from entering drinking water supplies or
streams.
Clean Up: Sweep, scoop or vacuum discharged material. Use according to labeling
or package for disposal.
Evacuation: Not necessary.
SECTION 7. STORAGE AND HANDLING
Storage: Store in a cool, well-ventilated, dry place at temperatures above 40掳F.
Do not stack pallets more than two (2) high.
Transfer Equipment: Transfer solutions of product using chemical-resistant plastic or
stainless steel tanks, pumps, valves, etc.
Work/Hygienic Practices: Keep out of reach of children. Avoid contact with eyes, skin and
clothing. Avoid breathing dust. Wash thoroughly with water after
handling.
SECTION 8. PERSONAL PROTECTIVE EQUIPMENT
Eyes: Chemical dust/splash goggles or full-face shield to prevent eye contact. As a
general rule, do not wear contact lenses when handling.
Skin: Impervious gloves and clothes if abrasion or irritation occurs.
Respiratory: Not normally needed. If use generates a nuisance dust mist or respiratory
irritation, use NIOSH-approved dust/mist respirator (such as 3M #8710).
Ventilation: Recommended but no TLV established.
MONTEREY MAGNESIUM SULFATE Page 3 of 4 Issue Date: 01/06
SECTION 9. PHYSICAL AND CHEMICAL DATA
Appearance: White crystalline powder.
Odor: None.
pH: Approximately 6-7.
Vapor Pressure: Not available.
Vapor Density (Air=1): Not available.
Boiling Point: Not available.
Freezing Point: Not available.
Water Solubility: 71 g/100 ml @ 20掳C; 91 g/100 ml @ 40掳C.
Specific Gravity: 1.76 g/cm3.
Bulk Density: ~1.05 g/cm3.
Evaporation Rate: Not available.
Viscosity: Not available.
% Volatile: Not available.
Octanol/Water Partition Coefficient: Not available.
Saturated Vapor Concentration: Not available.
SECTION 10. STABILITY AND REACTIVITY
Stability: Stable.
Conditions To Avoid: None known.
Incompatibility: Avoid metal hydrides and other water reactive materials.
Hazardous Decomposition Products: At very high temperatures, magnesium oxide, sulfur
dioxide and sulfur trioxide may be generated.
Hazardous Polymerization: Will not occur.
SECTION 11. POTENTIAL HEALTH EFFECTS
Acute Effects:
Eyes: No known adverse effects.
Skin: No known adverse effects.
Ingestion: Causes nausea, vomiting, stomach cramps and/or diarrhea.
Inhalation: Causes nausea, vomiting, stomach cramps and/or diarrhea.
Subchronic Effects: None known.
Chronic Effects: None known. Not listed by NTP, IARC or OSHA.
SECTION 12. ECOLOGICAL INFORMATION
Algal/Lemna Growth Inhibition: Not known.
Toxicity to Fish and Invertebrates: Not known.
Toxicity to Plants: Not known.
Toxicity in Birds: Not known.
Environmental Fate: This material is not persistent on aquatic systems
and does not contribute to BOD. It does not
bioconcentrate up the food chain.
MONTEREY MAGNESIUM SULFATE Page 4 of 4 Issue Date: 01/06
SECTION 13. DISPOSAL
Do not contaminate lakes, streams, ponds, estuaries, oceans or other waters by discharge of
effluents or equipment washwaters. Dispose of effluents according to state and local
regulations. Disposed material is not a RCRA hazardous waste. Also, chemical additions or
other alterations of this product may invalidate any disposal information in this MSDS.
Therefore, consult local waste regulators for proper disposal. Do not discharge.
SECTION 14. TRANSPORTATION
D.O.T.: Not D.O.T. regulated.
Other Shipping Description: Magnesium Sulfate (Epsom Salts), Dry.
NMFC Item 45140, LTL Class 60
SECTION 15. REGULATORY INFORMATION
CERCLA: None.
SARA TITLE III, Section 313 Toxic Chemicals: None.
PROPOSITION 65 (CA): WARNING: This product contains chemicals known to the State of
California to cause cancer and birth defects or other reproductive harm.
SECTION 16. OTHER
While the information contained herein is based on data considered accurate and was
compiled to comply with the Federal Hazard Communication Standard and the California
Hazardous Substances Information and Training Act, it is provided for guidance only.
Monterey AgResources does not guarantee its accuracy or completeness. Health and safety
precautions in this data sheet may not be adequate for all individuals and/or situations. It is
the user鈥檚 obligation to evaluate and use this product safely and to comply with all applicable
laws and regulations; in so doing, user assumes all risk in use of the material. The
information contained herein is not to be taken as a warranty or representation for which
Monterey AgResources assumes legal responsibility.
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