Product ID:ACETALDEHYDE
MSDS Date:Jan 24 1989
MSDS Number: EEEQR
Kit Part:=== Responsible Party ===
Company Name:MATHESON TRI-GAS, INC.
Address:959 ROUTE 46 EAST
City:PARSIPPANY
State:NJ
ZIP:07054-0624
Country:US
Info Phone Num:(USA) 973-257-1100, (WHITBY) 905-668-3570, (EDMONTON)
780-471-4036
Chemtrec Ind/Phone:18004249300

Telephone: (USA) 973-257-1100, (WHITBY) 905-668-3570, (EDMONTON)

ACETALDEHYDE

CAS: 75-07-0

Fraction By Weight: 100.0%

Reports of Carcinogenicity:NTP:Yes IARC:Yes OSHA:No
Health Hazards Acute and Chronic:INHALATION: SHORT TERM EXPOSURE:
irritation, lack of sense of smell, nausea, vomiting, chest pain,
difficulty breathing, headache, drowsiness, symptoms of
drunkenness, lung congestion LONG TERM EXPOSURE: disorientation,
cancer SKIN CONTACT: SHORT TERM EXPOSURE: irritation (possibly
severe), allergic reactions LONG TERM EXPOSURE: same as effects
reported in short term exposure EYE CONTACT: SHORT TERM EXPOSURE:
irritation (possibly severe), tearing, eye damage LONG TERM
EXPOSURE: same as effects reported in short term exposure
INGESTION: SHORT TERM EXPOSURE: nausea, vomiting, diarrhea, stomach
pain, irregular heartbeat, headache, drowsiness, symptoms of
drunkenness, lung congestion, coma LONG TERM EXPOSURE:
disorientation
Medical Cond Aggravated by Exposure:

First Aid: INHALATION: If adverse effects occur, remove to
uncontaminated area. Give artificial respiration if not breathing.
If breathing is difficult, oxygen should be administered by
qualified personnel. Get immediate medical attention. SKIN CONTACT:
Wash skin with soap and water for at least 15 minutes while
removing contaminated clothing and shoes. Get medical attention, if
needed. Thoroughly clean and dry contaminated clothing and shoes
before reuse. EYE CONTACT: Flush eyes with plenty of water for at
least 15 minutes. Then get immediate medical attention. INGESTION:
Contact local poison control center or physician immediately. Never
make an unconscious person vomit or drink fluids. When vomiting
occurs, keep head lower than hips to help prevent aspiration. If
person is unconscious, turn head to side. Get medical attention
immediately. NOTE TO PHYSICIAN: For inhalation, consider oxygen.
For ingestion, consider gastric lavage and activated charcoal
slurry.

Flash Point:-38 F (-39 C) (CC)
Autoignition Temp:347 F (175 C)
Lower Limits:4.0%
Upper Limits:60%
Extinguishing Media:alcohol resistant foam, carbon dioxide, regular dry
chemical, water Large fires: Use alcohol-resistant foam or flood
with fine water spray.
Fire Fighting Procedures:Move container from fire area if it can be
done without risk. Cool containers with water spray until well
after the fire is out. Stay away from the ends of tanks. For fires
in cargo or storage area: Cool containers with water from unmanned
hose holder or monitor nozzles until well after fire is out. If
this is impossible then take the following precautions: Keep
unnecessary people away, isolate hazard area and deny entry. Let
the fire burn. Withdraw immediately in case of rising sound from
venting safety device or any discoloration of tanks due to fire.
For tank, rail car or tank truck: Evacuation radius: 800 meters
(1/2 mile). Water may be ineffective.
Unusual Fire/Explosion Hazard:Severe fire hazard. Vapor/air mixtures
are explosive. The vapor is heavier than air. Vapors or gases may
ignite at distant ignition sources and flash back.

Neutralizing Agent:

Handling and Storage Precautions:Store and handle in accordance with
all current regulations and standards. Protect from physical
damage. Refrigerate. Store under an inert atmosphere. Store and
handle in a detached building. Store in a well-ventilated area.
Avoid heat, flames, sparks and other sources of ignition. Keep
separated from incompatible substances. Store with flammable
liquids. Do not evaporate or distill to dryness. May form explosive
peroxides. Avoid contact with light. Monitor inhibitor content.
Subject to storage regulations: U.S. OSHA 29 CFR 1910.106.
Grounding and bonding required. Keep separated from incompatible
substances.
Other Precautions:

Respiratory Protection:The following respirators and maximum use
concentrations are drawn from NIOSH and/or OSHA. At any detectable
concentration - Any self-contained breathing apparatus that has a
full facepiece and is operated in a pressure-demand or other
positive-pressure mode. Any supplied-air respirator with full
facepiece and operated in a pressure-demand or other
positive-pressure mode in combination with a separate escape
supply. Escape - Any air-purifying respirator with a full facepiece
and an organic vapor canister. Any appropriate escape-type,
self-contained breathing apparatus. For Unknown Concentrations or
Immediately Dangerous to Life or Health - Any supplied-air
respirator with full facepiece and operated in a pressure-demand or
other positive-pressure mode in combination with a separate escape
supply. Any self-contained breathing apparatus with a full
facepiece.
Ventilation:Ventilation equipment should be explosion-resistant if
explosive concentrations of material are present. Provide local
exhaust or process enclosure ventilation system. Ensure compliance
with applicable exposure limits.
Protective Gloves:Wear appropriate chemical resistant gloves.
Eye Protection:Wear splash resistant safety goggles with a faceshield.
Provide an emergency eye wash fountain and quick drench shower in
the immediate work area.
Other Protective Equipment:Wear appropriate chemical resistant
clothing.
Supplemental Safety and Health
ACETALDEHYDE: 200 ppm (360 mg/m3) OSHA TWA 100 ppm (180 mg/m3) OSHA
TWA (vacated by 58 FR 35338, June 30, 1993) 150 ppm (270 mg/m3)
OSHA STEL (vacated by 58 FR 35338, June 30, 1993) 25 ppm ACGIH
ceiling

Boiling Pt:70 F (21 C)
Melt/Freeze Pt:-186 F (-121 C)
Vapor Pres:750 mmHg @ 20 C
Vapor Density:1.52
Spec Gravity:0.7834
pH:Not available
Evaporation Rate & Reference:49.1 (butyl acetate=1)
Solubility in Water:soluble
Appearance and Odor:PHYSICAL STATE:liquid APPEARANCE:clear
COLOR:colorless PHYSICAL FORM:liquid, gas ODOR:fruity odor
Corrosion Rate:

Stability Indicator/Materials to Avoid:May polymerize. Avoid contact
with light or storage and use above room temperature.
Stability Condition to Avoid:Avoid heat, flames, sparks and other
sources of ignition. Containers may rupture or explode if exposed
to heat.
Hazardous Decomposition Products:Thermal decomposition products: oxides
of carbon Thermal decomposition products: oxides of carbon
Conditions to Avoid Polymerization:May polymerize. Avoid contact with
heat, light, air, water or incompatible materials. Closed
containers may rupture violently.

Waste Disposal Methods:Dispose in accordance with all applicable
regulations. Dispose in accordance with all applicable regulations.
Subject to disposal regulations: U.S. EPA 40 CFR 262. Hazardous
Waste Number(s): U001.

Toxicological Information:ACETALDEHYDE: IRRITATION DATA: 50 ppm/15
minute(s) eyes-human; 500 mg open skin-rabbit mild; 40 mg
eyes-rabbit severe TOXICITY DATA: 13300 ppm/4 hour(s)
inhalation-rat LC50; 3540 mg/kg skin-rabbit LD50; 661 mg/kg
oral-rat LD50 CARCINOGEN STATUS: NTP: Anticipated Human Carcinogen;
IARC: Human Inadequate Evidence, Animal Sufficient Evidence, Group
2B; ACGIH: A3 -Animal Carcinogen LOCAL EFFECTS: Irritant:
inhalation, skin, eye ACUTE TOXICITY LEVEL: Moderately Toxic:
ingestion Slightly Toxic: inhalation, dermal absorption TARGET
ORGANS: immune system (sensitizer), central nervous system MEDICAL
CONDITIONS AGGRAVATED BY EXPOSURE: kidney disorders, liver
disorders, respiratory disorders, skin disorders and allergies
TUMORIGENIC DATA: Available. MUTAGENIC DATA: Available.
REPRODUCTIVE EFFECTS DATA: Available. ADDITIONAL DATA: May be
excreted in breast milk. Alcohol may enhance the toxic effects.

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:ECOTOXICITY DATA: FISH TOXICITY: 37200 ug/L 96 hour(s) LC50
(Mortality) Fathead minnow (Pimephales promelas) INVERTEBRATE
TOXICITY: 48250 ug/L 48 hour(s) EC50 (Immobilization) Water flea
(Daphnia magna) ALGAL TOXICITY: 82000 ug/L 48 year(s) (Population
Growth) Cryptomonad (Chilomonas paramecium)

Transport Information:U.S. DOT 49 CFR 172.101: PROPER SHIPPING NAME:
Acetaldehyde ID NUMBER: UN1089 HAZARD CLASS OR DIVISION: 3 PACKING
GROUP: I LABELING REQUIREMENTS: Flammable liquid QUANTITY
LIMITATIONS: PASSENGER AIRCRAFT OR RAILCAR: Forbidden CARGO
AIRCRAFT ONLY: 30 L

SARA Title III Information: SARA TITLE III SECTION 302 EXTREMELY
HAZARDOUS SUBSTANCES (40 CFR 355.30): Not regulated. SARA TITLE
III SECTION 304 EXTREMELY HAZARDOUS SUBSTANCES (40 CFR 355.40): Not
regulated. SARA TITLE III SARA SECTIONS 311/312 HAZARDOUS
CATEGORIES (40 CFR 370.21): ACUTE: Yes CHRONIC: Yes FIRE: Yes
REACTIVE: Yes SUDDEN RELEASE: No SARA TITLE III SECTION 313 (40
CFR 372.65): Acetaldehyde
Federal Regulatory Information:CERCLA SECTIONS 102a/103 HAZARDOUS
SUBSTANCES (40 CFR 302.4): Acetaldehyde: 1000LBSRQ OSHA PROCESS
SAFETY (29CFR1910.119): Acetaldehyde: 2500LBSTQ
State Regulatory Information: California Proposition 65: Known to the
state of California to cause the following: Acetaldehyde Cancer
(Apr 01, 1988)