Common Name

Propargite

IUPAC Name :

2-(4-tert-butylphenoxy)cyclohexyl prop-2-ynyl sulfite

CAS Number

2312-35-8

Structural Formula

Physical and Chemical Characteristics

M.f. : C₁₉H₂₆O₄S

Mol. Wt. : 350.5

Form : Brownish-yellow, oily viscous liquid (tech.).

M.p.:  N/A

B.p. : Decomp. 210 °C (atmospheric pressure) without boiling

V.p. :  0.04 mPa (25 °C)

KowlogP = 5.70

Henry : 6.4 × 10^-2 Pa m³ mol^-1 (calc.)

S.g./density: 1.12 (20 °C)

Solubility:
In water 0.215 mg/l (25 °C). Fully miscible with hexane, toluene, dichloromethane, methanol and acetone.

Stability:
Hydrolysis DT₅₀ 66.3 d (25 °C), 9.0 d (40 °C) (pH 7); DT₅₀ 1.1 d (25 °C), 0.2 d (40 °C) (pH 9); stable at pH 4. Photolysis DT₅₀ c. 6 d (pH 5). DT₅₀ in atmosphere 2.155 h (Atkinson calculation).

pKa : >12

F.p. 71.4 °C (Pensky-Martens closed cup)

Specification

Propargite content, %≥ 90.0
Water content, % ≤ 0.4
Acetone insoluble, % ≤ 0.2
Acidity, % ≤ 0.3