SIGMA-ALDRICH
Material Safety Data Sheet
Date Printed: 25/NOV/2004
Date Updated: 13/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 BENZYL MERCAPTAN, 99%
Product Number 543934
Company Sigma-Aldrich Pty, Ltd
Unit 2, 14 Anella Avenue
Castle Hill NSW 1765
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
BENZYL MERCAPTAN 100-53-8 202-862-5 None
Formula C7H8S
Molecular Weight 136.15 AMU
Synonyms Benzylhydrosulfide * Benzyl mercaptan *
Benzylthiol * (Mercaptomethyl)benzene *
alpha-Mercaptotoluene * Methanethiol, phenyl- *
Phenylmethanethiol * Phenylmethyl mercaptan *
Thiobenzyl alcohol * alpha-Toluolthiol *
alpha-Tolyl mercaptan * USAF EK-1509
3 - Hazards Identification
SPECIAL INDICATION OF HAZARDS TO HUMANS AND THE ENVIRONMENT
Harmful if swallowed. Toxic by inhalation.
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 immediately.
5 - Fire Fighting Measures
EXTINGUISHING MEDIA
Suitable: Water spray. Carbon dioxide, dry chemical powder, or
appropriate foam.
SPECIAL RISKS
Specific Hazard(s): Combustible liquid. Emits toxic fumes under
fire conditions.
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.
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 tightly closed. Keep away from heat
and open flame. Store under nitrogen.
8 - Exposure Controls / Personal Protection
ENGINEERING CONTROLS
Use only in a chemical fume hood. Safety shower and eye bath.
GENERAL HYGIENE MEASURES
Wash contaminated clothing before reuse. Wash thoroughly after
handling.
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
ALDRICH - 543934 www.sigma-aldrich.com Page 2
Property Value At Temperature or Pressure
pH N/A
BP/BP Range 75 - 77 藲C 10 mmHg
MP/MP Range N/A
Flash Point 70 藲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 N/A
SG/Density 1.053 g/cm3
Partition Coefficient N/A
Viscosity N/A
Vapor Density > 4 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
STABILITY
Stable: Stable.
Materials to Avoid: Strong bases, Strong oxidizing agents.
HAZARDOUS DECOMPOSITION PRODUCTS
Hazardous Decomposition Products: Carbon monoxide, Carbon dioxide,
Sulfur oxides, Hydrogen sulfide gas.
HAZARDOUS POLYMERIZATION
Hazardous Polymerization: Will not occur
11 - Toxicological Information
RTECS NUMBER: XT8650000
ACUTE TOXICITY
LD50
Oral
Rat
493 mg/kg
Remarks: Behavioral:Somnolence (general depressed activity).
Lungs, Thorax, or Respiration:Respiratory depression.
Behavioral:Coma.
LD50
Intraperitoneal
Rat
373 MG/KG
Remarks: Behavioral:Somnolence (general depressed activity).
Lungs, Thorax, or Respiration:Respiratory depression.
Behavioral:Coma.
ALDRICH - 543934 www.sigma-aldrich.com Page 3
LC50
Inhalation
Mouse
178 ppm
4H
Remarks: Behavioral:Muscle weakness. Behavioral:Ataxia. Lungs,
Thorax, or Respiration:Cyanosis.
LD50
Intraperitoneal
Mouse
100 MG/KG
IRRITATION DATA
Eyes
Rabbit
106 mg
SIGNS AND SYMPTOMS OF EXPOSURE
Symptoms of exposure may include burning sensation, coughing,
wheezing, laryngitis, shortness of breath, headache, nausea, and
vomiting. To the best of our knowledge, the chemical, physical,
and toxicological properties have not been thoroughly
investigated.
ROUTE OF EXPOSURE
Skin Contact: May cause skin irritation.
Skin Absorption: May be harmful if absorbed through the skin.
Eye Contact: May cause eye irritation.
Inhalation: Toxic if inhaled. Material may be irritating to
mucous membranes and upper respiratory tract.
Ingestion: Harmful if swallowed.
CHRONIC EXPOSURE - CARCINOGEN
Mouse
Route of Application: Skin
Exposure Time: 26W
Result: Tumorigenic:Equivocal tumorigenic agent by RTECS
criteria. Skin and Appendages: Other: Tumors. Tumorigenic:Tumors
at site or application.
12 - Ecological Information
No data available.
13 - Disposal Considerations
SUBSTANCE DISPOSAL
Contact a licensed professional waste disposal service to dispose
of this material. This combustible material may be burned in a
chemical incinerator equipped with an afterburner and scrubber.
Observe all federal, state, and local environmental regulations.
14 - Transport Information
RID/ADR
UN#: 2810
Class: 6.1
PG: III
Proper Shipping Name: Toxic liquid, organic, n.o.s.
ALDRICH - 543934 www.sigma-aldrich.com Page 4
IMDG
UN#: 2810
Class: 6.1
PG: III
Proper Shipping Name: Toxic liquid, organic, n.o.s.
Marine Pollutant: No
Severe Marine Pollutant: No
Technical Name: Required
IATA
UN#: 2810
Class: 6.1
PG: III
Proper Shipping Name: Toxic liquid, organic, n.o.s.
Inhalation Packing Group I: No
Technical Name: Required
15 - Regulatory Information
CLASSIFICATION AND LABELING ACCORDING TO EU DIRECTIVES
INDICATION OF DANGER: T
Toxic.
R-PHRASES: 22 23
Harmful if swallowed. Toxic by inhalation.
S-PHRASES: 23 26 36/37/39 45
Do not breathe vapor. In case of contact with eyes, rinse
immediately with plenty of water and seek medical advice. Wear
suitable protective clothing, gloves, and eye/face protection.
In case of accident or if you feel unwell, seek medical advice
immediately (show the label where possible).
SWITZERLAND
SWISS POISON CLASS: 3
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 2004 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.
ALDRICH - 543934 www.sigma-aldrich.com Page 5
|