Material Safety Data Sheet
Revision Issued: 8/27/2004 Supercedes: 5/12/2000 First Issued: 2/11/87
Section I - Chemical Product And Company Identification
Product Name: 1,1,1-Trichloroethane
CAS Number: 71-55-6 HBCC MSDS No. CT03000
1675 No. Main Street, Orange, California 92867
Telephone No: 714-998-8800 | Chemtrec: 800-424-9300
Section II - Composition/Information On Ingredients
Exposure Limits (TWAs) in Air
Chemical Name CAS Number % ACGIH TLV OSHA PEL STEL
1,1,1-Trichloroethane 71-55-6 96 350 ppm 350 ppm 450
Cyclic Ether N/A 3 25 ppm 25 ppm N/A
Section III - Hazard Identification
Routes of Exposure: Inhalation of vapor, absorption through the skin, ingestion, and
skin and eye contact.
Summary of Acute Health Hazards
Ingestion: May cause irritation of the gastrointestinal tract, with vomiting. If vomiting
results in aspiration, chemical pneumonia could follow. Absorption through the gastro-
intestinal tract may produce symptoms of central nervous system depression, ranging
from light-headedness to unconsciousness.
Inhalation: Excessive inhalation may produce symptoms of central nervous system
depression, ranging from light-headedness, nausea and vomiting, to unconsciousness and
death.
Skin: Mildly irritating to skin. Skin contact may produce a burning sensation. Prolonged
or repeated contact may cause the skin to become reddened, rough, and dry due to the
removal of natural oils, and may result in dermatitis.
Eyes: An irritant to the eye, causing pain, lacrimation, and general inflammation.
Summary of Chronic Health Hazards: N/A
Effects of Overexposure: Can cause headache, mental confusion, depression, fatigue,
loss of appetite, nausea, vomiting, cough, loss of sense of balance, and visual
disturbances. Acts as a narcotic and depresses the central nervous system.
Medical Conditions Generally Aggravated by Exposure: N/A
Product Name: 1,1,1-Trichloroethane 1
Note to Physicians: Caution: Epinephrine or other stimulant may cause ventricular
arrhythmia due to potentiation of endogenous epinephrine. Because rapid absorption may
occur through lungs if aspirated and cause systemic effects, the decision of whether to
induce vomiting or not should be made by an attending physician. If lavage is performed,
suggest endotracheal and/or esophageal control. Danger from lung aspiration must be
weighed against toxicity when considering emptying the stomach. Exposure may increase
"myocardial irritability." Do not administer sympathomimetic drugs unless absolutely
necessary. No specific antidote. Supportive care. Treatment based on judgement of the
physician in response to reactions of the patient.
Section IV - First Aid Measures
Ingestion: NEVER give anything by mouth to an unconscious person. Do NOT induce
vomiting. If vicitim is conscious and alert give 2 - 4 cupfuls of water.If unconscious, keep
victim warm, and take immediately to a hospital. GET MEDICAL ATTENTION.
Inhalation: Remove to fresh air immediately. If not breathing, administer oxygen. Do
NOT use mouth-to-mouth respiration. GET MEDICAL ATTENTION.
Skin: Wash contaminated areas with plenty of soap and water for at least 15 minutes. If
1,1,1 Trichloroethane soaks through the clothing, remove the clothing promptly and wash
the skin with soap and water. If irritation persists after washing. GET MEDICAL
ATTENTION.
Eyes: Immediately flush eyes with large amounts of water for at least 15 minutes,
holding the lids apart to ensure flushing of the entire eye surface. If irritation is present
after washing. GET MEDICAL ATTENTION.
Section V - Fire Fighting Measures
Autoignition Temperature: 485oC; (905oF)
Flash Point: N/A
Lower Explosive Limit: 7.5 @ 25oC;
Upper Explosive Limit: 15.0 @ 25oC; 77oF
77oF
Unusual Fire and Explosion Hazards: Nonflammable and nonexplosive under normal
conditions of use. Vapors concentrated in a confined or poorly ventilated area can be
ignited upon contact with a high energy spark, flame, or high intensity source of heat.
This can occur at concentrations ranging between 7-15% by volume.
Extinguishing Media: Use water fog, dry chemical, carbon dioxide, or regular foam.
Special Firefighting Procedures: Use water spray to keep fire-exposed containers cool.
Pressure demand self-contained breathing apparatus should be provided for firefighters in
buildings or confined areas where 1,1,1-Trichloroethane is stored.
Section VI - Accidental Release Measures
Immediately evacuate the area and provide maximum ventilation. Unprotected personnel
should be restricted from areas of spills or leaks until cleanup has been completed. Dike
area to contain spill. Take precautions as necessary to prevent contamination of ground
and surface waters. Recover spilled material on adsorbents, such as earth, sand and
vermiculite, and sweep into closed containers for disposal. Do not use combustible
materials such as sawdust.
Product Name: 1,1,1-Trichloroethane 2
Section VII - Handling and Storage
Do not use in poorly ventilated or confined areas without proper respiratory protection.
Vapors are heavier than air and will collect in low areas. Store only in closed, properly
labeled containers. 1,1,1-Trichloroethane attacks natural rubber; therefore, protective
clothing of leather, polyvinyl alcohol, or neoprene is recommended. Wash thoroughly
after handling.
Section VIII - Exposure Controls/Personal Protection
Respiratory Protection: Use a half or full facepiece organic vapor chemical cartridge or
canister respirator when concentrations exceed permissible limits. Use self-contained
breathing apparatus (SCBA) or full facepiece airline respirator with auxiliary SCBA
operated in the pressure-demand mode for emergencies and for all work performed in
storage vessels, poorly ventilated rooms, and other confined areas. Respirators must be
approved by NIOSH or MSHA.
Ventilation: Use local exhaust or dilution ventilation as appropriate to control exposures
to below permissible limits.
Protective Clothing: Protective clothing of leather, polyvinyl alcohol, or neoprene is
recommended.
Eye Protection: Splashproof goggles.
Work/Hygienic Practices: Avoid contact with the eyes, skin, and mucous membranes,
and avoid inhalation of the vapors.
Section IX - Physical and Chemical Properties
Physical State: Liquid pH: 6.0 to 7.5
Melting Point/Range: -35掳C Boiling Point/Range: 74.1掳C; 165掳F
Appearance/Color/Odor: Colorless liquid Evaporation Rate: 1.0 (carbon
with a mild odor, like chloroform tetrachloride=1)
Solubility in Water: Insoluble Vapor Pressure(mmHg): 100 @ 20掳C
Specific Gravity(Water=1): 1.38 Molecular Weight: 133.4
Vapor Density(Air=1): 4.54 % Volatiles: 100%
How to detect this compound : Determination
in water by inert gas purge followed by gas
chromatography with halide specific detection Viscosity: 0.86 cP @ 20掳C
(EPA Method 601) or gas chromatography plus
mass spectrometry (EPA Method 624).
Section X - Stability and Reactivity
Stability: Stable Hazardous Polymerization: Will Not Occur
Conditions to Avoid: Do not use cutting or welding torches on empty drums that
contained 1,1,1- Trichloroethane unless properly cleaned. Avoid high temperatures, and
ignition sources.
Materials to Avoid: Liquid oxygen or other strong oxidants mayform explosive mixtures
with 1,1,1 - Trichloroethane. Contact with aluminum may cause possible solvent
Product Name: 1,1,1-Trichloroethane 3
decomposition. Water - long time contact can deplete stabilizers followed by slow
hydrolysis producing corrosive acid.
Hazardous Decomposition Products: Contact with flames or hot surfaces may cause
decomposition to form hydrogen chloride and possible traces of phosgene.
Section XI - Toxicological Information
1,1,1 Trichloroethane vapor is a narcotic. A number of human fatalities related to
industrial exposure in closed spaces have been reported. A 5-minute exposure to 5000
ppm can be expected to produce marked lack of coordination and anesthesia. Prolonged
exposure at this exposure may cause coma and death. Exposure to concentrations in
excess of 1000 ppm for 15 minutes, or 2000 ppm for 5 minutes, can be expected to
produce a disturbance of equilibrium in the majority of adults. In controlled human
exposures to 500 ppm no effects other than slight, transient eye irritation were noted; at
1000 ppm and above, mild eye irritation is usually experienced, with possible dizziness.
Following exposure, most of the compound is eliminated unchanged via the lungs within
48 hours.
Section XII - Ecological Information
WARNING: Contains methyl chloroform (1,1,1-Trichloroethane) a substance which
harms public health and the environment by destroying ozone in the upper
atmosphere. Oral - rat LD50: 9600 mg/kg. Oral - dog LD50: 750 mg/kg.
Section XIII - Disposal Considerations
Contaminated sawdust, vermiculite, or porous surfaces must be disposed of in a permitted
hazardous waste management facility. Recovered liquids may be reprocessed,
incinerated, or treated in a permitted hazardous waste management facility. Care must be
taken when using or disposing of chemical materials and/or their containers to prevent
environmental contamination.
Section XIV - Transport Information
DOT Proper Shipping Name: 1,1,1-Trichloroethane
DOT Hazard Class/ I.D. No.: 6.1, UN2831, III
DOT Reportable Quantity: 1000 Pounds (454 Kilograms) (134 Gal.)
Section XV - Regulatory Information
NFPA Rating: Health - 2; Fire - 1; Reactivity - 0
0=Insignificant 1=Slight 2=Moderate 3=High 4=Extreme
Carcinogenicity Lists: NTP: No IARC Monograph: No OSHA Regulated: No
Unifrom Fire Code Rating: N/EST
Section changed since last revision: II, IV, V, VI, IX, X, XII, XV
Section 313 Supplier Notification: This product contains the following toxic
chemcial(s) subject to the reporting requirements of SARA TITLE III Section 313 of the
Emergency Planning and Community Right-To Know Act of 1986 and of 40 CFR 372:
CAS # Chemical Name % By Weight
71-55-6 1,1,1-Trichloroethane 96%
Product Name: 1,1,1-Trichloroethane 4
Section XVI - Other Information
Synonyms/Common Names: Methyl Chloroform; Chlorothen; Aerothene
Chemical Family/Type: Halogenated Hydrocarbons
IMPORTANT! Read this MSDS before use or disposal of this product. Pass along the
information to employees and any other persons who could be exposed to the product to
be sure that they are aware of the information before use or other exposure. This MSDS
has been prepared according to the OSHA Hazard Communication Standard [29 CFR
1910.1200]. The MSDS information is based on sources believed to be reliable.
However, since data, safety standards, and government regulations are subject to change
and the conditions of handling and use, or misuse are beyond our control, Hill Brothers
Chemical Company makes no warranty, either expressed or implied, with respect to the
completeness or continuing accuracy of the information contained herein and disclaims
all liability for reliance thereon. Also, additional information may be necessary or helpful
for specific conditions and circumstances of use. It is the user's responsibility to
determine the suitability of this product and to evaluate risks prior to use, and then to
exercise appropriate precautions for protection of employees and others.
Product Name: 1,1,1-Trichloroethane 5
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