Product ID:N-ACETYL-L-CYSTEINE SIGMA GRADE, A7250
MSDS Date:01/01/1999
FSC:6810
NIIN:01-373-3540
Status Code:A
MSDS Number: CJQPM

Emergency Phone: 314-771-5765

Info Phone: 314-771-5765

Cage: 21076

Telephone: 314-771-5765

Cage: 21076

(ORAL,RAT) 5050 MG/KG.

CAS: 616-91-1

RTECS: HA1660000

LD50 LC50 Mixture:SEE INGREDIENTS & TOX INFORMATION.
Routes of Entry: Inhalation:YES Skin:YES Ingestion:YES
Reports of Carcinogenicity:NTP:NO IARC:NO OSHA:NO
Health Hazards Acute and Chronic:ACUTE: MAY BE HARMFUL BY INHALATION,
INGESTION OR SKIN ABSORPTION. EXPOSURE CAN CAUSE BRONCHOSPASM,
NAUSEA, VOMITING, STOMATITIS, AND NASAL DISCHARGE. TARGET ORGAN
DATA: GASTROINTESTINAL (OTHER CHANGE S).
Effects of Overexposure:SEE HEALTH HAZARDS.

First Aid:INGESTION: WASH OUT MOUTH WITH WATER PROVIDED PERSON IS
CONSCIOUS. CALL MD. SKIN: FLUSH WITH COPIOUS AMOUNTS OF WATER FOR
AT LEAST 15 MINUTES. REMOVE CONTAMINATED CLOTHING AND SHOES. CALL
MD. INHALATI ON: REMOVE TO FRESH AIR. IF BREATHING BECOMES
DIFFICULT, CALL MD. EYES: FLUSH WITH COPIOUS AMOUNTS OF WATER FOR
AT LEAST 15 MINUTES. ASSURE ADEQUATE FLUSHING BY SEPARATING EYELIDS
WITH FINGERS. CALL M D.

Extinguishing Media:WATER SPRAY, CARBON DIOXIDE, DRY CHEMICAL POWDER OR
APPROPRIATE FOAM.
Fire Fighting Procedures:USE NIOSH APPROVED SCBA AND FULL PROTECTIVE
EQUIPMENT .
Unusual Fire/Explosion Hazard:EMITS TOXIC FUMES UNDER FIRE CONDITIONS.

Spill Release Procedures:WEAR PROTECTIVE EQUIPMENT. SWEEP UP, PLACE IN
A BAG AND HOLD FOR WASTE DISPOSAL. AVOID RAISING DUST. VENTILATE
AREA AND WASH SPILL SITE AFTER MATERIAL PICKUP IS COMPLETE.

Handling and Storage Precautions:CAUTION: AVOID CONTACT AND INHALATION.

Respiratory Protection:WEAR APPROPRIATE NIOSH APPROVED RESPIRATOR.
Ventilation:MECHANICAL EXHAUST REQUIRED.
Protective Gloves:CHEMICAL-RESISTANT GLOVES.
Eye Protection:ANSI APPROVED CHEMICAL WORKERS GOGGLES .
Other Protective Equipment:ANSI APPROVED EYE WASH & DELUGE SHOWER .
WEAR OTHER PROTECTIVE CLOTHING.
Supplemental Safety and Health

Melt/Freeze Pt:>109.C, 228.2F
M.P/F.P Text:109-111C
Appearance and Odor:WHITE CRYSTALS.

Stability Indicator/Materials to Avoid:YES
HEAVY METALS, HEAVY METAL SALTS, RUBBER, OXYGEN, OXIDIZING AGENTS.
Hazardous Decomposition Products:TOXIC FUMES OF: CARBON MONOXIDE,
CARBON DIOXIDE, NITROGEN OXIDES, SULFUR OXIDES.
Conditions to Avoid Polymerization:WILL NOT OCCUR.

Waste Disposal Methods:DISSOLVE OR MIX THE MATERIAL WITH A COMBUSTIBLE
SOLVENT AND BURN IN A CHEMICAL INCINERATOR EQUIPPED WITH AN
AFTERBURNER AND SCRUBBER. OBSERVE ALL FEDERAL, STATE AND LOCAL
ENVIRONMENTAL REGULATIONS.

Toxicological Information:TOX DATA: LD50:(ORAL,RAT) 5050 MG/KG - TXAPA9
18,185,1971. LD50:(IVN,RAT) 1140 MG/KG - EJRDD2 61 (SUPPL
111),45,1980. LD50:(ORAL,MUS) 4400 MG/KG - EPXXDW #0192191.
LD50:(IPR,MUS) 400 MG/KG - NTIS** AD 691-490. LD50:(IVN,MUS) 3800
MG/KG - JMCMAR 10,1172,1967. LD50:(ORAL,DOG) >1 GM/KG - PBPSDY
2,479,1979. LD50:(IPR,DOG) 700 MG/KG - PBPSDY 2,479,1979.
LD50:(IVN,DOG) 700 MG/KG - PBPSDY 2,479,1979. ONLY SELECTED
REGISTRY OF TOXIC EFFECTS OF CHEMICAL SUBSTANCES (RTECS) DATA IS
PRESENTED HERE. SEE ACTUAL ENTRY IN RTECS FOR COMPLETE INFORMATION.

Disclaimer (provided with this information by the compiling agencies):
This information is formulated for use by elements of the Department
of Defense. The United States of America in no manner whatsoever,
expressly or implied, warrants this information to be accurate and
disclaims all liability for its use. Any person utilizing this
document should seek competent professional advice to verify and
assume responsibility for the suitability of this information to their
particular situation.

Ecological:DATA NOT YET AVAILABLE.

Transport Information:CONTACT SIGMA CHEMICAL COMPANY FOR TRANSPORTATION
INFORMATION.

Federal Regulatory Information:REVIEWS, STANDARDS AND REGULATIONS:
OEL=MAK. NOHS 1974: HZD 81688; NIS 1; TNF 616; NOS 6; TNE 4525.
NOES 1983: HZD 81688; NIS 1; TNF 1677; NOS 14; TNE 31203; TFE
21201. EPA TSCA SECTION 8(B) CHEMICAL INVENTORY.