Malathion (ISO, BSI, ESA, USAN, USP, BAN); Mercaptothion (So. Africa); Carbofos (USSR); Mercaptotion (Argentina); Maldison (Australia, New Zealand)
Other Code Number
diethyl (dimethoxyphosphinothioylthio)succinate or S-1,2-bis(ethoxycarbonyl)ethyl O,O-dimethyl phosphorodithioate (IUPAC); diethyl 2-[(dimethoxyphosphinothioyl)thio]butanedioate (CAS)
Clear to amber liquid with a mercaptan odor. Specific gravity 1.23 at 25°C. Melting point 2.85°C. Vapor pressure 4 x 10-5 mm Hg at 30°C. Miscible in most organic solvents; limited solubility in aliphatic hydrocarbon.
Store in cool, dry, well-ventilated, secure area out of reach of children and animals. Harmful if swallowed or inhaled. Avoid contact with skin. Wash thoroughly after handling. Change contaminated clothing. Do not contaminate food or feed. Biological activity of malathion premium grade remains practically unvaried for 2 years if stored in unopened, undamaged original containers, in cool, shaded, well-ventilated area. Recommended 68-86°F (20-25°C) for good shelflife. Do not heat above 55°C. Above 100°C, decomposes rapidly and explosion may be induced
Chemical-resistant footwear plus socks. Long-sleeved shirt and long pants. Chemical-resistant gloves. Protective eyewear.
Above 325°F (TOC)
Fire Extenguishing Media
Water, foam, carbon dioxide, dry chemical
Get medical aid. Eyes: flush with plenty of water for 15 minutes. Skin: remove clothing, flush skin with plenty of water. Inhalation: remove to fresh air. Give oxygen if breathing difficult. Ingestion: induce immediate vomiting.