Pyroxasulfone
[CAS 447399-55-5]

Identification

• Name: Pyroxasulfone
• Synonyms: 3-[[5-(difluoromethoxy)-1-methyl-3-(trifluoromethyl)pyrazol-4-yl]methylsulfonyl]-5,5-dimethyl-4H-1,2-oxazole
• Molecular Formula: C₁₂H₁₄F₅N₃O₄S
• Molecular Weight: 391.31
• CAS Registry Number: 447399-55-5
• EC Number: 800-417-5
• SMILES: CC1(CC(=NO1)S(=O)(=O)CC2=C(N(N=C2C(F)(F)F)C)OC(F)F)C

Properties

• Solubility: 153.7 mg/L (25 °C water)
• Density: 1.6±0.1 g/cm³, Calc.^*
• Index of Refraction: 1.526, Calc.^*
• Melting point: 166.20 °C
• Boiling Point: 400.68 °C, 418.1±55.0 °C (760 mmHg), Calc.^*
• Flash Point: 206.6±31.5 °C, Calc.^*

^* Calculated using Advanced Chemistry Development (ACD/Labs) Software.

Safety Data

• Hazard Symbols: GHS07;GHS08;GHS09 Danger
• Risk Statements: H302-H319-H372-H410
• Safety Statements: P273-P305+P351+P338-P314

Hazard Classification

Hazard	Class	Category Code	Hazard Statement
Acute hazardous to the aquatic environment	Aquatic Acute	1	H400
Chronic hazardous to the aquatic environment	Aquatic Chronic	1	H410
Specific target organ toxicity - repeated exposure	STOT RE	2	H373
Specific target organ toxicity - repeated exposure	STOT RE	1	H372