General Information
Version
6
Revision date
2026-07-25
Product name
Methyl isothiocyanate
Product Synonyms
MTC; Methyl mustard-oil
CAS No.
556-61-6
supplier name
Avocado Research Chemicals Ltd
Emergency telephone
001-201-796-7100, +32 14 57 52 99, 001-800-424-9300, 001-703-527-3887
Icons in SDS
Company Information
company name
Avocado Research Chemicals Ltd
e-mail address of the competent person responsible for the Safety Data Sheet
begel.sdsdesk@thermofisher.com
GHS Information
Signal word
Danger
Hazard Codes
Hazard statements (CLP)
H226, H301+H331, H310, H314, H317, H410
Hazard statements
Code
Statements
H226
Flammable liquid and vapour
Section 2
SECTION 2: Hazards identification
Physical State
Appearance/Odor
Solid Yellow-orange pungent Emergency Overview Flammable liquid and vapor. Toxic if swallowed. Toxic if inhaled. Causes severe skin burns and eye damage. May cause an allergic skin reaction. Harmful to aquatic life. Very toxic to aquatic life with long lasting effects. Fatal in contact with skin. Moisture sensitive. Lachrymator (substance which increases the flow of tears). Classification of the substance or mixture Flammable liquids Category 3 Acute Oral Toxicity Category 3 Acute Dermal Toxicity Category 1 Acute Inhalation Toxicity - Dusts and Mists Category 3 Skin Corrosion/Irritation Category 1 B Serious Eye Damage/Eye Irritation Category 1 Skin Sensitization Category 1 Acute aquatic toxicity Category 1 Category 3 Chronic aquatic toxicity Category 1 Label Elements
Signal word
Danger Hazard Statements H226 - Flammable liquid and vapor H314 - Causes severe skin burns and eye damage H317 - May cause an allergic skin reaction H410 - Very toxic to aquatic life with long lasting effects H310 - Fatal in contact with skin H301 + H331 - Toxic if swallowed or if inhaled
Prevention
P264 - Wash face, hands and any exposed skin thoroughly after handling P262 - Do not get in eyes, on skin, or on clothing P271 - Use only outdoors or in a well-ventilated area P270 - Do not eat, drink or smoke when using this product P272 - Contaminated work clothing should not be allowed out of the workplace P280 - Wear protective gloves/protective clothing/eye protection/face protection
Response
P304 + P340 - IF INHALED: Remove person to fresh air and keep comfortable for breathing P303 + P361 + P353 - IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower P310 - Immediately call a POISON CENTER or doctor P305 + P351 + P338 - IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing P330 - Rinse mouth P331 - Do NOT induce vomiting P362 + P364 - Take off contaminated clothing and wash it before reuse
Storage
P405 - Store locked up P403 + P233 - Store in a well-ventilated place. Keep container tightly closed
Disposal
P501 - Dispose of contents/ container to an approved waste disposal plant
Other physicochemical hazards
Vapors may cause flash fire or explosion. Flammable liquid.
Health hazards
Toxic if swallowed. Toxic if inhaled. Harmful if inhaled. Corrosive. Causes skin and eye burns. May cause an allergic skin reaction. Causes serious eye damage. Fatal in contact with skin. Lachrymator (substance which increases the flow of tears).
Environmental hazards
Harmful to aquatic life. Very toxic to aquatic life with long lasting effects. . Will likely be mobile in the environment due to its water solubility. The product is water soluble, and may spread in water systems.
2.3 Other hazards
Lachrymator (substance which increases the flow of tears) Toxicity to Soil Dwelling Organisms. Toxic to terrestrial vertebrates. This product does not contain any known or suspected endocrine disruptors.
2.1 Classification of the substance or mixture
Flammable liquids. Category 3 Acute Oral Toxicity Category 3 Acute Dermal Toxicity Category 1 Acute Inhalation Toxicity - Dusts and Mists Category 3 Skin Corrosion/Irritation Category 1 B Serious Eye Damage/Eye Irritation Category 1 Skin Sensitization Category 1 Acute aquatic toxicity Category 1 Category 3 Chronic aquatic toxicity