Thiram
NOMENCLATURE
Common name Thiram
IUPAC name tetramethylthiuram disulfide; bis(dimethylthiocarbamoyl) disulfide
Chemical Abstracts name tetramethylthioperoxydicarbonic diamide
CAS RN 137-26-8
EEC no.
CONTROL OBJECT
Crop
Control object
PHYSICAL CHEMISTRY

Mol. wt. 240.4 

M.f. C6H12N2S4 

Form Colourless crystals. 

M.p. 155-156 ºC  

V.p. 2.3 mPa (25 ºC) 

KOW logP = 1.73 

Henry 3.3×10-2 Pa m3 mol-1

S.g./density 1.29 (20 ºC) 

Solubility In water 18 mg/l (room temperature). In ethanol <10, acetone 80, chloroform 230 (all in g/l, room temperature). In hexane 0.04, dichloromethane 170, toluene 18, isopropanol 0.7 (all in g/l, 20 ºC). 

Stability Decomposed in acidic media. Some deterioration on prolonged exposure to heat, air or moisture. DT50 (est.) (22 ºC) 128 d (pH 4), 18 d (pH 7), 9 h (pH 9).

APPLICATIONGS
Biochemistry
Basic contact fungicide with protective action. Mode of action
Protective fungicide applied to foliage to control: Botrytis spp. on grapes, soft fruit, lettuce, vegetables and ornamentals; rust on ornamentals; scab and storage diseases on apples and pears; leaf curl and Monilia on stone fruit. Used in seed treatments alone or in combination with added insecticides or fungicides to control damping-off diseases (e.g. Pythium spp.), and other diseases like Fusarium spp. of maize, cotton, cereals, legumes, vegetables and ornamentals. Also used as a bird repellent. Uses
PRODUCT INFORMATION
Standard of technical material
Testing itemsStandard(w/w)
Content
Loss of drying
Water
Formulation type
content
Package
Mix with
Typical application rates