General Information
Version
4
Revision date
2025-12-22
Product name
3-(Methylthio)propionaldehyde
Product Synonyms
3-(Methylmercapto)propionaldehyde; Beta-(Methylmercapto)propionaldehyde; Methional; 4-Thiapentanal
CAS No.
3268-49-3
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
Thermo Fisher Scientific Chemicals, Inc
GHS Information
Signal word
Danger
Section 2
SECTION 2: Hazards identification
(29 CFR 1910.1200) Classification
Signal word
Danger Hazard Statements Combustible liquid Toxic in contact with skin Causes skin irritation May cause an allergic skin reaction Causes serious eye damage Harmful if swallowed or if inhaled
Prevention
Wash face, hands and any exposed skin thoroughly after handling Do not eat, drink or smoke when using this product Wear protective gloves/protective clothing/eye protection/face protection Avoid breathing dust/fume/gas/mist/vapors/spray Use only outdoors or in a well-ventilated area Contaminated work clothing should not be allowed out of the workplace Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking Inhalation IF INHALED: Remove person to fresh air and keep comfortable for breathing Call a POISON CENTER or doctor if you feel unwell Skin IF ON SKIN: Wash with plenty of soap and water Call a POISON CENTER or doctor if you feel unwell Take off immediately all contaminated clothing Take off contaminated clothing and wash before reuse If skin irritation or rash occurs: Get medical advice/attention Eyes IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing Immediately call a POISON CENTER or doctor/physician Ingestion IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell Rinse mouth Fire In case of fire: Use CO2, dry chemical, or foam to extinguish
Storage
Store locked up Store in a well-ventilated place. Keep cool
Disposal
Dispose of contents/container to an approved waste disposal plant
2.3 Other hazards
Harmful to aquatic life with long lasting effects Lachrymator (substance which increases the flow of tears)
Other hazards
Stench.
2.1 Classification of the substance or mixture
This chemical is considered hazardous according to [US] OSHA (29 CFR 1910.1200, 2024) Flammable liquids Category 4 Acute oral toxicity Category 4 Acute dermal toxicity Category 3 Acute Inhalation Toxicity - Vapors Category 4 Skin Corrosion/Irritation Category 2 Serious Eye Damage/Eye Irritation Category 1 Skin Sensitization
