| Identification | More | [Name]
Thiodicarb | [CAS]
59669-26-0 | [Synonyms]
3,7,9,13-TETRAMETHYL-5,11-DIOXA-2,8,14-TRITHIA-4,7,9,12-TETRAAZAPENTADECA-3,12-DIENE-6,10-DIONE
CHIPCO
DICARBASULF
LARVIN
LARVIN(R)
NIVRAL
SEMEVIN(R)
SKIPPER
THIODICARB
a93-29311
bismethomylthioether
cga45156
dicarbosulf
dimethyl-n,n-(thio-bis-(methylimino)carbonyloxy)-bis-(ethanimidothioate)
Ethanimidothioicacid,N’,N’-(thiobis((methylimino)carbonyloxy))bis-,dimethylester
larvinthiodicarbinsecticideovicide
lepicron
liushuanwei
n,n’-(thiobis((methylimino)carbonyloxy))bisethanimidothioicaciddimethylest
n,n’-(thiobis((methylimino)carbonyloxy))bis-ethanimidothioicacidimethyle | [EINECS(EC#)]
261-848-7 | [Molecular Formula]
C10H18N4O4S3 | [MDL Number]
MFCD00145401 | [Molecular Weight]
354.47 | [MOL File]
59669-26-0.mol |
| Safety Data | Back Directory | [Hazard Codes ]
T+ | [Risk Statements ]
R25:Toxic if swallowed.
R26:Very Toxic by inhalation. | [Safety Statements ]
S28:After contact with skin, wash immediately with plenty of ... (to be specified by the manufacturer) .
S36/37:Wear suitable protective clothing and gloves .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) . | [RIDADR ]
2757 | [WGK Germany ]
3 | [RTECS ]
KJ4301050 | [HazardClass ]
6.1(b) | [PackingGroup ]
III | [Hazardous Substances Data]
59669-26-0(Hazardous Substances Data) | [Toxicity]
LD50 in rats (mg/kg): 160 orally, >1600 dermally (Sousa) |
| Hazard Information | Back Directory | [General Description]
Colorless to pale tan crystals. Non corrosive. Used as an insecticide. | [Reactivity Profile]
A carbamate derivative. Carbamates are chemically similar to, but more reactive than amides. Like amides they form polymers such as polyurethane resins. Carbamates are incompatible with strong acids and bases, and especially incompatible with strong reducing agents such as hydrides. Flammable gaseous hydrogen is produced by the combination of active metals or nitrides with carbamates. Strongly oxidizing acids, peroxides, and hydroperoxides are incompatible with carbamates. | [Air & Water Reactions]
Hydrolyzed by strong acid or base. | [Uses]
Insecticide. | [Uses]
Thiodicarb is an oxime carbamate insecticide and ovicide with
both oral and contact activities against major Lepidoptera, Coleoptera,
Diptera and Hemiptera pests in/on cotton, maize, fruits, soyabeans and
vegetables. | [Uses]
Thiodicarb is used as an insecticide. | [Agricultural Uses]
Insecticide, Molluscicide, Ovicide: Not approved for use in EU countries. Registered
for use in the U.S. Thiodicarb is used primarily on cotton,
sweet corn, and soybeans. The remaining usage is spread
among leafy vegetables, cole crops, ornamentals, and
other minor use sites. Thiodicarb acts as an ovicide against
cotton bollworms and budworms. | [Trade name]
CGA® 45156; CHIPCO[C];
DICARBOSULF®; DICARBASULF®; LARVIN®;
LEPICRON®; SEMEVIN®; NIVRAL®; UC-51762®;
UC 51769®; UC 80502® | [Environmental Fate]
Soil. Under aerobic and anaerobic soil conditions, thiodicarb degrades to methomyl
and methomyl oxime (Hartley and Kidd, 1987). The reported half-life in various soils is
3–8 days (Hartley and Kidd, 1987). | [Metabolic pathway]
The initial metabolic reaction of thiodicarb in soils, plants and animals
is the hydrolytic or thiolytic cleavage of the N-S bond to methomyl.
The subsequent metabolic pathway of methomyl involves hydrolysis /
elimination reactions to yield S-methyl-N-hydroxythioacetimidate and
ultimately acetonitrile and CO2 as the major terminal products. The metabolic
pathways of thiodicarb are presented in Scheme l. See also the
methomyl entry. | [Degradation]
Thiodicarb (1) is susceptible to alkaline hydrolysis (Feung and Heinzelmann,
1989). Thiodicarb was stable between pH 5 and 6, but it degraded
rapidly in alkaline conditions (pH 9) with a DT50 of less than one day. The
DT50 values of thiodicarb at pH 3 and 7 were 9 and 13 days, respectively.
The initial degradation product of thiodicarb was methomyl (2) which
was further hydrolysed to S-methyl-N-hydroxytoacetimidate (3) in
alkaline solution (pH 9).
Photolysis of thiodicarb in water was not significant (Andrawes
and College, 1977). The photolytic DT50 of thiodicarb was approximately
81 days. The major photolytic degradation product was methomyl(2). |
| Questions And Answer | Back Directory | [Description]
Thiodicarb is a white crystalline powder with a slight sulphurous odour. Thiodicarb is stable in light and ambient conditions and unstable in alkaline conditions. Thiodicarb is a carbamate insecticide. Thiodicarb is commonly used to protect agricultural crops from major lepidopterous insect pests and suppresses coleopterous and some hemipterous insect pests. Thiodicarb acts as an ovicide against cotton bollworms and budworms. Thiodicarb is used primarily on cotton, sweet corn, and soybeans. Thiodicarb is formulated to include several liquid products and one powdered product that must be mixed with water before field application. Thiodicarb is reclassified as an RUP. Thiodicarb degrades rapidly to methomyl, which is already a restricted use chemical.
| [References]
http://www.wisegeek.com/what-is-thiodicarb.htm
http://pmep.cce.cornell.edu/profiles/insect-mite/propetamphos-zetacyperm/thiodicarb/insect-prof-thiodicarb.html
http://www.inchem.org/documents/jmpr/jmpmono/v00pr09.htm#_00092120
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