General Information
Version
6
Revision date
2026-07-16
Product name
2-Methyl-2-propanethiol
Product Synonyms
tert-Butyl mercaptan
CAS No.
75-66-1
supplier name
Fisher Scientific UK
Emergency telephone
001-800-227-6701, +32 14 57 52 11, 001-201-796-7100, +32 14 57 52 99, 001-800-424-9300, 001-703-527-3887
Icons in SDS
Company Information
company name
Fisher Scientific UK
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)
H225, H303, H317, H319, H336, H411
Hazard statements
Code
Statements
H225
Highly Flammable liquid and vapour
Section 2
SECTION 2: Hazards identification
Physical State
Appearance/Odor
Liquid Colorless Stench Emergency Overview Highly flammable liquid and vapor. May cause an allergic skin reaction. Causes serious eye irritation. May cause drowsiness and dizziness. Toxic to aquatic life with long lasting effects. May be harmful if swallowed. Stench. Classification of the substance or mixture Flammable liquids Category 2 Acute Oral Toxicity Category 5 Serious Eye Damage/Eye Irritation Category 2B Skin Sensitization Category 1 Specific target organ toxicity - (single exposure) Category 3 Acute aquatic toxicity Category 2 Chronic aquatic toxicity Category 2 Label Elements
Signal word
Danger Hazard Statements H225 - Highly flammable liquid and vapor H317 - May cause an allergic skin reaction H319 - Causes serious eye irritation H336 - May cause drowsiness or dizziness H411 - Toxic to aquatic life with long lasting effects H303 - May be harmful if swallowed
Prevention
P210 - Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking P233 - Keep container tightly closed P242 - Use non-sparking tools P270 - Do not eat, drink or smoke when using this product P240 - Ground and bond container and receiving equipment P241 - Use explosion-proof electrical/ ventilating/ lighting equipment P243 - Take action to prevent static discharges P261 - Avoid breathing dust/fume/gas/mist/vapors/spray P272 - Contaminated work clothing should not be allowed out of the workplace P280 - Wear protective gloves/protective clothing/eye protection/face protection
Response
P370 + P378 - In case of fire: Use dry sand, dry chemical or alcohol-resistant foam to extinguish P301 + P312 - IF SWALLOWED: Call a POISON CENTER or doctor if you feel unwell P303 + P361 + P353 - IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower P333 + P313 - If skin irritation or rash occurs: Get medical advice/attention P362 + P364 - Take off contaminated clothing and wash it before reuse
Storage
P403 + P235 - Store in a well-ventilated place. Keep cool
Disposal
P501 - Dispose of contents/ container to an approved waste disposal plant
Other physicochemical hazards
Vapors may cause flash fire or explosion. Highly flammable.
Health hazards
May cause an allergic skin reaction. Causes serious eye irritation. May cause drowsiness or dizziness. May be harmful if swallowed.
Environmental hazards
Toxic to aquatic life with long lasting effects. Will likely be mobile in the environment due to its volatility. The product contains volatile organic compounds (VOC) which will evaporate easily from all surfaces.
2.3 Other hazards
Stench. This product does not contain any known or suspected endocrine disruptors.
2.1 Classification of the substance or mixture
Flammable liquids. Category 2 Acute Oral Toxicity Category 5 Serious Eye Damage/Eye Irritation Category 2B Skin Sensitization Category 1 Specific target organ toxicity - (single exposure) Category 3 Acute aquatic toxicity Category 2 Chronic aquatic toxicity