Thidiazuron
Thidiazuron Basic information
- Product Name:
- Thidiazuron
- Synonyms:
-
- Thidiazauron (1-Phenyl-3-(1,2,3-thiadiazol-5-yl)-harnstoff
- N-phenyl-N-1,2,3,-thiadiazol-5-yluree
- 5-(N-Phenylcarbonylamino)-1,2,3-thiadiazole
- N-Phenyl-N'-1,2,3-thiodiazol-5-yl urea
- THIDIAZURON PESTANAL (1-PHENYL- 3-(1,2,3
- THIDIAZURON, 1GM, NEAT
- 1-PHENYL-3-(1,2,3-THIADIAZOL-5-YL)UREA*P LANT CELL C
- TDZ
- CAS:
- 51707-55-2
- MF:
- C9H8N4OS
- MW:
- 220.25
- EINECS:
- 257-356-7
- Product Categories:
-
- Aromatics
- Heterocycles
- Cytokinins
- Plant Growth Regulators
- Sulfur & Selenium Compounds
- plantgrowth
- Plant Tissue Culture
- Herbicides
- Pesticides
- Pesticides&Metabolites
- Plant growth regulatorsAlphabetic
- TF - TOPesticides&Metabolites
- Urea structure
- Alpha sort
- Plant growth regulatorsPesticides&Metabolites
- Q-ZAlphabetic
- Mol File:
- 51707-55-2.mol
Thidiazuron Chemical Properties
- Melting point:
- 213°C
- Density
- 1.3493 (rough estimate)
- refractive index
- 1.6390 (estimate)
- storage temp.
- Sealed in dry,2-8°C
- solubility
- Soluble in DMSO
- pka
- 12.06±0.70(Predicted)
- form
- Solid
- color
- Light yellow to yellow
- Merck
- 13,9384
- BRN
- 1078092
- InChIKey
- HFCYZXMHUIHAQI-UHFFFAOYSA-N
- CAS DataBase Reference
- 51707-55-2(CAS DataBase Reference)
- EPA Substance Registry System
- Thidiazuron (51707-55-2)
Safety Information
- Hazard Codes
- Xi,N
- Risk Statements
- 36/37/38-51/53
- Safety Statements
- 22-26-36-61
- RIDADR
- UN 3077 9 / PGIII
- WGK Germany
- 3
- RTECS
- YU1395000
- HS Code
- 2934999090
- Hazardous Substances Data
- 51707-55-2(Hazardous Substances Data)
- Toxicity
- LC50 (96-hour) for bluegill sun?sh, channel cat?sh and rainbow trout >1,000 mg/L (Hartley and Kidd, 1987); acute oral LD50 for rats >5,000 mg/kg (Hartley and Kidd, 1987), 5,350 mg/kg (RTECS, 1985).
MSDS
- Language:English Provider:5-Phenylcarbamoylamino-1,2,3-thiadiazole
- Language:English Provider:SigmaAldrich
Thidiazuron Usage And Synthesis
Chemical Properties
The pure product is a white odorless and tasteless crystalline solid. m.p.210~212.5°C (decomposition at 217°C), vapor pressure 4×10-9Pa) (25°C). Solubility at 25°C: dimethyl sulfoxide>500g/L, dimethylformamide>500g/L, cyclohexanone 21.5g/L, acetone 8g/L, methanol 4.5g/L, ethyl acetate 0.8 g/L, hexane 6mg/L, insoluble in aliphatic and aromatic hydrocarbons, solubility in water 31mg/L. The partition coefficient is 59 (pH=7.3). Stable below 200°C; stable to water at room temperature, half-life > 24d; half-life in soil < 60d.
Uses
Thidiazuron is a non-purine containing urea derivative with cytokinin activity. Thidiazuron is used as a cotton defoliant and a plant growth regulator in tissue culture.
Uses
Plant growth regulator used to defoliate cotton to facilitate harvesting.
Definition
ChEBI: Thidiazuron is a member of ureas.
General Description
Thidiazuron is a systemic herbicide, widely employed as an effective plant growth regulator and pre-harvest defoliant for crops such as cotton.
Agricultural Uses
Thidiazuron is substituted urea that is used to defoliate cotton plants. Thidiazuron, which has cytokinin activity, is one of the many harvesting aids needed in agriculture.
Agricultural Uses
Herbicide, Defoliant, Plant growth regulator: Used primarily as a cotton defoliant in order to increase the harvest yield. Not applied to food crops. Not approved for use in EU countries. Registered for use in the U.S. U.S. Maximum Allowable Residue Levels for Thidiazuron and its aniline-containing metabolites in or on the following food commodities: [40 CFR 180.403(a)]: cattle, fat 0.4 ppm; cattle, meat 0.4 ppm; cattle, meat byproducts 0.4 ppm; cotton, gin byproducts 24.0 ppm; cotton, undelinted seed 0.3 ppm; goat, fat 0.4 ppm; goat meat 0.4 ppm; goat, meat byproducts 0.4 ppm; hog, fat 0.4 ppm; hog, meat 0.4 ppm; hog, meat byproducts 0.4 ppm; horse, fat 0.4 ppm; horse, meat 0.4 ppm; horse, meat byproducts 0.4 ppm; milk 0.05 ppm; sheep, fat 0.4 ppm; sheep, meat 0.4 ppm; sheep, meat byproducts 0.4 ppm.
Trade name
DAZE®; DEFOLIT®; DROPP®; GINSTAR EC® (thidiazuron + diuron); LEAFLESS® Tthidiazuron; SN 49537®
Safety Profile
Moderately toxic by ingestion. Experimental reproductive effects. When heated to decomposition it emits toxic fumes of SOx and NOx.
Environmental Fate
Soil. The reported half-life in soil is approximately 26–144 days (Hartley and Kidd,
1987).
Photolytic. Rapidly converted to the photoisomer, 1-phenyl-3-(1,2,5-thiadiazol-3-
yl)urea (Worthing and Hance, 1991). When thidiazuron adsorbed by soil was exposed to
UV light (λ <290 nm), 1-phenyl-3-(1,2,5-thiadiazol-3-yl)urea formed as the majo
Thidiazuron Preparation Products And Raw materials
Raw materials
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