SIGMA-ALDRICH
Material Safety Data Sheet
Date Printed: 16/FEB/2005
Date Updated: 12/MAR/2004
Version 1.2
According to 91/155/EEC
Classified as Hazardous according to the criteria of EU Annex 1 and
NOHSC.
1 - Product and Company Information
Product Name 1-BUTANETHIOL, 99+%
Product Number 240966
Company Sigma-Aldrich Pty, Ltd
Unit 2, 14 Anella Avenue
Castle Hill NSW 1765
Australia
Technical Phone # +61 2 9841 0555
Fax +61 2 9841 0500
Emergency Phone # +61 2 9841 0566
2 - Composition/Information on Ingredients
Product Name CAS # EC no Annex I
Index Number
1-BUTANETHIOL 109-79-5 203-705-3 None
Formula C4H10S
Molecular Weight 90.19 AMU
Synonyms Butanethiol (OSHA) * Butyl mercaptan * n-Butyl
mercaptan (ACGIH) * Butyl mercaptan (DOT:OSHA) *
NCI-C60866
3 - Hazards Identification
SPECIAL INDICATION OF HAZARDS TO HUMANS AND THE ENVIRONMENT
Highly flammable. Harmful by inhalation and if swallowed.
Irritating to eyes, respiratory system and skin.
4 - First Aid Measures
AFTER INHALATION
If inhaled, remove to fresh air. If not breathing give
artificial respiration. If breathing is difficult, give oxygen.
AFTER SKIN CONTACT
In case of skin contact, flush with copious amounts of water for
at least 15 minutes. Remove contaminated clothing and shoes.
Call a physician.
AFTER EYE CONTACT
In case of contact with eyes, flush with copious amounts of
water for at least 15 minutes. Assure adequate flushing by
separating the eyelids with fingers. Call a physician.
AFTER INGESTION
If swallowed, wash out mouth with water provided person is
conscious. Call a physician.
5 - Fire Fighting Measures
EXTINGUISHING MEDIA
Suitable: Water spray. Carbon dioxide, dry chemical powder, or
appropriate foam.
SPECIAL RISKS
Specific Hazard(s): Flammable liquid. Emits toxic fumes under
fire conditions.
Explosion Hazards: Vapor may travel considerable distance to
source of ignition and flash back. Container explosion can occur
under fire conditions. In advanced or massive fires the area
should be evacuated and the fire should be fought from a remote
explosion-resistant location.
SPECIAL PROTECTIVE EQUIPMENT FOR FIREFIGHTERS
Wear self-contained breathing apparatus and protective clothing
to prevent contact with skin and eyes.
6 - Accidental Release Measures
PERSONAL PRECAUTION PROCEDURES TO BE FOLLOWED IN CASE OF LEAK OR SPILL
Evacuate area. Shut off all sources of ignition.
PROCEDURE(S) OF PERSONAL PRECAUTION(S)
Wear self-contained breathing apparatus, rubber boots, and heavy
rubber gloves.
METHODS FOR CLEANING UP
Cover with dry-lime, sand, or soda ash. Place in covered
containers using non-sparking tools and transport outdoors.
Ventilate area and wash spill site after material pickup is
complete.
7 - Handling and Storage
HANDLING
Directions for Safe Handling: Do not breathe vapor. Avoid
contact with eyes, skin, and clothing. Avoid prolonged or
repeated exposure.
STORAGE
Conditions of Storage: Keep container closed. Keep away from
heat, sparks, and open flame.
SPECIAL REQUIREMENTS: Air sensitive.
8 - Exposure Controls / Personal Protection
ENGINEERING CONTROLS
Safety shower and eye bath. Use nonsparking tools. Mechanical
exhaust required.
GENERAL HYGIENE MEASURES
Wash thoroughly after handling. Wash contaminated clothing before
reuse.
EXPOSURE LIMITS
Country Source Type Value
Poland NDS 1 MG/M3
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Poland NDSCh 2 MG/M3
Poland NDSP -
EXPOSURE LIMITS - DENMARK
Source Type Value
OEL TWA 1.5 mg/m3
0.5 ppm
EXPOSURE LIMITS - GERMANY
Source Type Value
TRGS 900 OEL 1.5 mg/m3
0.5 ppm
Remarks: =1=
EXPOSURE LIMITS - NORWAY
Source Type Value
OEL 1.5 mg/m3
0.5 ppm
EXPOSURE LIMITS - SWITZERLAND
Source Type Value
OEL OEL 1.9 mg/m3
0.5 ppm
PERSONAL PROTECTIVE EQUIPMENT
Respiratory Protection: Government approved respirator.
Hand Protection: Compatible chemical-resistant gloves.
Eye Protection: Chemical safety goggles.
9 - Physical and Chemical Properties
Appearance Physical State: Clear liquid
Color: Colorless
Property Value At Temperature or Pressure
pH N/A
BP/BP Range 96 - 98 掳C
MP/MP Range -116 掳C
Flash Point 12 掳C Method: closed cup
Flammability N/A
Autoignition Temp N/A
Oxidizing Properties N/A
Explosive Properties N/A
Explosion Limits N/A
Vapor Pressure 83 mmHg 37.7 掳C
SG/Density 0.84 g/cm3
Partition Coefficient N/A
Viscosity N/A
Vapor Density 3.1 g/l
Saturated Vapor Conc. N/A
Evaporation Rate N/A
Bulk Density N/A
Decomposition Temp. N/A
Solvent Content N/A
Water Content N/A
Surface Tension N/A
Conductivity N/A
Miscellaneous Data N/A
Solubility N/A
10 - Stability and Reactivity
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STABILITY
Stable: Stable.
Conditions of Instability: May discolor on exposure to air.
Materials to Avoid: Bases, Oxidizing agents, Alkali metals.
HAZARDOUS DECOMPOSITION PRODUCTS
Hazardous Decomposition Products: Carbon monoxide, Carbon dioxide,
Hydrogen sulfide gas, Sulfur oxides.
HAZARDOUS POLYMERIZATION
Hazardous Polymerization: Will not occur
11 - Toxicological Information
RTECS NUMBER: EK6300000
ACUTE TOXICITY
LD50
Oral
Rat
1500 mg/kg
Remarks: Behavioral:Somnolence (general depressed activity).
Lungs, Thorax, or Respiration:Respiratory depression.
Behavioral:Coma.
LC50
Inhalation
Rat
4,020 ppm
4H
Remarks: Lungs, Thorax, or Respiration:Respiratory stimulation.
Behavioral:Somnolence (general depressed activity). Sense Organs
and Special Senses (Nose, Eye, Ear, and Taste):Eye:Lacrimation.
LD50
Intraperitoneal
Rat
399 MG/KG
Remarks: Behavioral:Somnolence (general depressed activity).
Lungs, Thorax, or Respiration:Respiratory depression.
Behavioral:Coma.
LD50
Oral
Mouse
3000 mg/kg
LC50
Inhalation
Mouse
2,500 ppm
4H
Remarks: Lungs, Thorax, or Respiration:Respiratory stimulation.
Behavioral:Somnolence (general depressed activity). Sense Organs
and Special Senses (Nose, Eye, Ear, and Taste):Eye:Lacrimation.
LC50
Inhalation
Dog
770 ppm
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30M
IRRITATION DATA
Eyes
Rabbit
83 mg
SENSITIZATION
Sensitization: Prolonged or repeated exposure may cause allergic
reactions in certain sensitive individuals.
SIGNS AND SYMPTOMS OF EXPOSURE
Exposure can cause: Nausea, headache, and vomiting. Cyanosis.
Unconsciousness. To the best of our knowledge, the chemical,
physical, and toxicological properties have not been thoroughly
investigated.
ROUTE OF EXPOSURE
Skin Contact: Causes skin irritation.
Skin Absorption: May be harmful if absorbed through the skin.
Eye Contact: Causes eye irritation. Lachrymator.
Inhalation: Harmful if inhaled. Material is irritating to mucous
membranes and upper respiratory tract.
Ingestion: Harmful if swallowed.
TARGET ORGAN INFORMATION
Eyes. Nerves.
CHRONIC EXPOSURE - REPRODUCTIVE HAZARD
Species: Mouse
Dose: 68 PPM/6H
Route of Application: Inhalation
Exposure Time: (6-16D PREG)
Result: Effects on Fertility: Post-implantation mortality (e.g.,
dead and/or resorbed implants per total number of implants).
Specific Developmental Abnormalities: Craniofacial (including
nose and tongue). Specific Developmental Abnormalities:
Musculoskeletal system.
12 - Ecological Information
No data available.
13 - Disposal Considerations
SUBSTANCE DISPOSAL
Burn in a chemical incinerator equipped with an afterburner and
scrubber but exert extra care in igniting as this material is
highly flammable. Observe all federal, state, and local
environmental regulations.
14 - Transport Information
RID/ADR
UN#: 2347
Class: 3
PG: II
Proper Shipping Name: Butylmercaptane
IMDG
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UN#: 2347
Class: 3
PG: II
Proper Shipping Name: Butyl mercaptans
Marine Pollutant: No
Severe Marine Pollutant: No
IATA
UN#: 2347
Class: 3
PG: II
Proper Shipping Name: BUTYL MERCAPTAN
Inhalation Packing Group I: No
15 - Regulatory Information
CLASSIFICATION AND LABELING ACCORDING TO EU DIRECTIVES
INDICATION OF DANGER: F Xn
Highly Flammable. Harmful.
R-PHRASES: 11 20/22 36/37/38
Highly flammable. Harmful by inhalation and if swallowed.
Irritating to eyes, respiratory system and skin.
S-PHRASES: 16 23 26 36
Keep away from sources of ignition - no smoking. Do not breathe
vapor. In case of contact with eyes, rinse immediately with
plenty of water and seek medical advice. Wear suitable
protective clothing.
SWITZERLAND
SWISS POISON CLASS: 4
16 - Other Information
WARRANTY
The above information is believed to be correct but does not
purport to be all inclusive and shall be used only as a guide. The
information in this document is based on the present state of our
knowledge and is applicable to the product with regard to
appropriate safety precautions. It does not represent any
guarantee of the properties of the product. Sigma-Aldrich Inc.,
shall not be held liable for any damage resulting from handling or
from contact with the above product. See reverse side of invoice
or packing slip for additional terms and conditions of sale.
Copyright 2005 Sigma-Aldrich Co. License granted to make unlimited
paper copies for internal use only.
DISCLAIMER
For R&D use only. Not for drug, household or other uses.
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