SIGMA-ALDRICH
Material Safety Data Sheet
Date Printed: 12/APR/2005
Date Updated: 18/MAY/2004
Version 1.6
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 METHYL DISULFIDE, 99% (POLY-COATED
BOTTLES)
Product Number 320412
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
DIMETHYL DISULFIDE 624-92-0 210-871-0 None
Formula C2H6S2
Molecular Weight 94.2 AMU
Synonyms Dimethyldisulfide
3 - Hazards Identification
SPECIAL INDICATION OF HAZARDS TO HUMANS AND THE ENVIRONMENT
Highly flammable. Harmful by inhalation and if swallowed.
Irritating to eyes. Toxic to aquatic organisms, may cause
long-term adverse effects in the aquatic environment.
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 contact, immediately wash skin with soap and copious
amounts of water.
AFTER EYE CONTACT
In case of contact, immediately flush eyes with copious amounts
of water for at least 15 minutes.
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 may occur
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. Shut off all sources of ignition. Use nonsparking
tools.
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. Do not get
in eyes, on skin, on clothing. Avoid prolonged or repeated
exposure.
STORAGE
Conditions of Storage: Keep tightly closed. Keep away from heat,
sparks, and open flame.
8 - Exposure Controls / Personal Protection
ENGINEERING CONTROLS
Safety shower and eye bath. Use nonsparking tools. Mechanical
exhaust required.
GENERAL HYGIENE MEASURES
Remove and wash contaminated clothing promptly. Wash thoroughly
after handling.
EXPOSURE LIMITS - SWEDEN
Source Type Value
LLV (Level1 ppm
PERSONAL PROTECTIVE EQUIPMENT
Respiratory Protection: Government approved respirator.
Hand Protection: Compatible chemical-resistant gloves.
Eye Protection: Chemical safety goggles.
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9 - Physical and Chemical Properties
Appearance Physical State: Clear liquid
Color: Light yellow-green
Property Value At Temperature or Pressure
pH N/A
BP/BP Range 108 - 110 癈
MP/MP Range -85 癈
Flash Point 15 癈 Method: closed cup
Flammability N/A
Autoignition Temp > 300 癈
Oxidizing Properties N/A
Explosive Properties N/A
Explosion Limits Lower: 1.1 %
Upper: 16 %
Vapor Pressure 28.6 mmHg 25 癈
SG/Density 1.062 g/cm3
Partition Coefficient Log Kow: 1.77
Viscosity N/A
Vapor Density 3.24 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, Strong
reducing 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: JO1927500
ACUTE TOXICITY
LC50
Inhalation
Rat
3,100 mg/m3
4H
LD50
Oral
Rat
*
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LD50
Skin
Rabbit
> 2,000 mg/kg
LC50
Inhalation
Rat
15.85 mg/m3
2H
LC50
Inhalation
Mouse
12.3 mg/m3
2H
IRRITATION DATA
Skin
Rabbit
Remarks: Mild irritation effect
Eyes
Rabbit
Remarks: Moderate irritation effect
Eyes
Rabbit
0.1 ml
24H
SENSITIZATION
Sensitization: Will not occur
SIGNS AND SYMPTOMS OF EXPOSURE
Exposure can cause: Nausea, headache, and vomiting. Anemia.
ROUTE OF EXPOSURE
Skin Contact: May cause skin irritation.
Skin Absorption: May be harmful if absorbed through the skin.
Eye Contact: Causes eye irritation.
Inhalation: Harmful if inhaled. Material may be irritating to
mucous membranes and upper respiratory tract.
Ingestion: Harmful if swallowed.
TARGET ORGAN INFORMATION
Blood. Liver.
12 - Ecological Information
ELIMINATION
Elimination: < 10 %
ECOTOXICOLOGICAL EFFECTS
Test Type: LC50 Fish
Species: Salmon
Value: 1.75 mg/l
Test Type: EC50 Daphnia
Species: Daphnia magna
Time: 48 h
Value: 7 mg/l
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Test Type: IC50 Algae
Time: 72 h
Value: > 10.5 mg/l
13 - Disposal Considerations
SUBSTANCE DISPOSAL
Contact a licensed professional waste disposal service to dispose
of this material. 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#: 2381
Class: 3
PG: II
Proper Shipping Name: Dimethyl disulphide
IMDG
UN#: 2381
Class: 3
PG: II
Proper Shipping Name: Dimethyl disulphide
Marine Pollutant: No
Severe Marine Pollutant: No
IATA
UN#: 2381
Class: 3
PG: II
Proper Shipping Name: Dimethyl disulphide
Inhalation Packing Group I: No
15 - Regulatory Information
CLASSIFICATION AND LABELING ACCORDING TO EU DIRECTIVES
INDICATION OF DANGER: F N Xn
Highly Flammable. Dangerous for the environment. Harmful.
R-PHRASES: 11 20/22 36 51/53
Highly flammable. Harmful by inhalation and if swallowed.
Irritating to eyes. Toxic to aquatic organisms, may cause
long-term adverse effects in the aquatic environment.
S-PHRASES: 16 26 60
Keep away from sources of ignition - no smoking. In case of
contact with eyes, rinse immediately with plenty of water and
seek medical advice. This material and its container must be
disposed of as hazardous waste.
COUNTRY SPECIFIC INFORMATION
Germany
WGK: 2 (self-classification)
SWITZERLAND
SWISS POISON CLASS: 2
16 - Other Information
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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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