Metaisosystox sulfoxide
[CAS 301-12-2]

Identification

• Classification: Chemical pesticide >> Insecticide >> Organophosphorus pesticide
• Name: Metaisosystox sulfoxide
• Synonyms: Metasystox R; Methyl oxydemeton S; NSC 370785; O,O-Dimethyl S-[2-(ethylsulfinyl)ethyl] monothiophosphate
• Molecular Formula: C₆H₁₅O₄PS₂
• Molecular Weight: 246.29
• CAS Registry Number: 301-12-2
• EC Number: 206-110-7

Properties

• Solubility: Freely soluble (835 g/L) (25 °C), Calc.^*
• Density: 1.289 g/cm³ (20 °C)^**
• Melting point: <-20 °C^**
• Refractive index: 1.5216 (589.3 nm 20 °C)^**

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software V11.02 (©1994-2014 ACD/Labs)

^** "Hazardous Substances Data Bank" data were obtained from the National Library of Medicine (US)

Safety Data

• Hazard Symbols: GHS06;GHS09 Danger
• Risk Statements: H311-H301-H400

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Acute hazardous to the aquatic environment	Aquatic Acute	1	H400
Acute toxicity	Acute Tox.	3	H301
Acute toxicity	Acute Tox.	3	H311