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MATERIAL SAFETY DATA SHEET
MSDS #GCC3-5
DIMETHYL SULFONE (DMSO
2
)
September 14, 2007

PRODUCT NAME:
Dimethyl Sulfone (DMSO
2
) CHEMICAL NAME: Dimethyl Sulfone

SYNONYMS/TRADE NAMES:
Methyl sulfone, Methanol sulfonylibis, MSM, Methylsulfonylmethane

MOLECULAR FORMULA: (
CH
3
)
2
SO
2
MOLECULAR WEIGHT: 94.13
MANUFACTURER/SUPPLIER:
GAYLORD CHEMICAL COMPANY, LLC
P. O. BOX 1209
SLIDELL, LA 70459-1209
EMERGENCY HEALTH, SAFETY & ENVIRONMENTAL INFORMATION, CALL:
Gaylord Chemical Company, LLC
(985) 649-5464 (8:00 am - 5:00 pm CST)
(985) 732-8662 (Nights and Weekends)
EMERGENCY TRANSPORTATION INFORMATION, CALL:
CHEMTREC (800) 424-9300

OTHER INFORMATION, CALL:
Gaylord Chemical Company, LLC (985) 649-5464
Ingredients
CAS No EINECS Weight % OSHA PEL ACGIH TLV®
Dimethyl Sulfone 67-71-0 200-665-9
99% Not established Not established
NTP/IARC/OSHA CARCINOGEN: No
EC Classifications:
None Required

PHYSICAL APPEARANCE:
White crystalline flakes, powder or prills
ODOR:
Essentially odorless
EFFECTS OF OVEREXPOSURE:
Inhalation:
A nuisance dust that may cause respiratory irritation due to its physical
form.
Eyes:
The physical form of the chemical could be mechanically irritating to the
eye.
Skin:
Non-irritating.
Ingestion:
Undetermined in humans but generally considered to be of low toxicity (oral
rat LD
50
: 17,000mg/kg).

HMIS AND NFPA HAZARD RATINGS:
Health - 1, Flammability - 1, Chemical Reactivity - 0
Note: HMIS and NFPA ratings involve data and interpretations that may vary from company to company. In both cases the
lower the number, the less the hazard. They are intended only for rapid, general identification of the magnitude of the specific
hazard. To deal adequately with the safe handling of this material, all the information contained in this MSDS must be
considered.
Eye Contact:
Flush thoroughly with running water (including under eyelids) for at least 15 minutes. If
irritation persists after flushing, seek medical attention.
1. CHEMICAL PRODUCT AND COMPANY IDENTIFICATION
2. COMPOSITION/INFORMATION ON INGREDIENTS
3. HAZARDS IDENTIFICATION
4. FIRST AID MEASURES