General Information
Version
6.5
Revision date
2025-11-04
Product name
Sodium methanethiolate
Product Synonyms
Sodium thiomethoxide
CAS No.
5188-07-8
1.2.1 Relevant identified uses
For R&D use only. Not for pharmaceutical, household or other uses
Emergency telephone
+64 9 801 0034
Icons in SDS
Company Information
company name
Merck Life Science Ltd
e-mail address of the competent person responsible for the Safety Data Sheet
customersupport.anz@merckgroup.com
GHS Information
Signal word
Danger
Hazard Codes
Hazard statements (CLP)
H228, H261, H301, H314
Hazard statements
Code
Statements
H228
Flammable solid
Section 2
SECTION 2: Hazards identification
GHS Classification Flammable solids Category 1 Substances and mixtures, which in contact with wa- ter, emit flammable gases Category 2 Acute toxicity (Oral) Category 3 Skin corrosion/irritation Category 1C Serious eye damage/eye irritation Category 1
Signal word
Danger
Hazard statements
H228 Flammable solid. H261 In contact with water releases flammable gases. H301 Toxic if swallowed. H314 Causes severe skin burns and eye damage.
Prevention
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking. P231 + P232 Handle and store contents under inert gas. Protect from moisture. P260 Do not breathe dust. P264 Wash skin thoroughly after handling. P280 Wear protective gloves/ protective clothing/ eye protection/ face protection.
Response
P301 + P310 + P330 IF SWALLOWED: Immediately call a POISON CENTER/ doctor. Rinse mouth. P302 + P335 + P334 IF ON SKIN: Brush off loose par- ticles from skin. Immerse in cool water. P303 + P361 + P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water. P304 + P340 + P310 IF INHALED: Remove person to fresh air and keep comfortable for breathing. Immedi- ately call a POISON CENTER/ doctor. P305 + P351 + P338 + P310 IF IN EYES: Rinse cau- tiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER/ doctor. P370 + P378 In case of fire: Use dry sand, dry chemi- cal or alcohol-resistant foam to extinguish.
Other hazards which do not result in classification
None known.
2.1 Classification of the substance or mixture
Flammable solids : Category 1 Substances and mixtures, : Category 2 which in contact with wa- ter, emit flammable gases Acute toxicity (Oral) : Category 3 Skin corrosion/irritation : Category 1C Serious eye damage/eye : Category 1 irritation
