51707-55-2
Product Name:
Thidiazuron
Formula:
C9H8N4OS
Synonyms:
1-Phenyl-3-(1,2,3-thiadiazol-5-yl)urea;TDZ
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CHEMICAL AND PHYSICAL PROPERTIES
| Physical Description | Colorless odorless solid; [HSDB] Technical product is yellowish-brown solid; Formulated as wettable powder, soluble concentrate, and emulsifiable concentrate; [Reference #1] |
|---|---|
| Color/Form | Colorless crystals |
| Odor | Odorless |
| Melting Point | 210.5 - 212.5 °C (decomposes) |
| Solubility | >500 g/L in dimethyl sulfoxide; > 500 g/L in dimethylformamide; 21.5 g/L in cyclohexane; 4.5 g/L in methanol; 8 g/L in acetone |
| Density | Density = 0.324 gm/cu cm at 20 °C /technical grade/ |
| Vapor Pressure | 2.30X10-11 mmHg at 25 °C |
| LogP | log Kow = 1.77 at pH 7.3 |
| Decomposition | When heated to decomposition it emits toxic fumes of /sulfur oxides and nitrogen oxides/. |
| pH | pH = 6.50 at 20 °C |
| Dissociation Constants | pKa = 8.86 |
| Other Experimental Properties | Hydrolytically stable at room temperature from pH 5-9 |
| Chemical Classes | Pesticides -> Herbicides, Urea Derivative |
SAFETY INFORMATION
| Signal word | Warning |
|---|---|
| Pictogram(s) |
 Exclamation Mark Irritant GHS07  Environment GHS09 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation H410:Hazardous to the aquatic environment, long-term hazard |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P271:Use only outdoors or in a well-ventilated area. P273:Avoid release to the environment. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
COMPUTED DESCRIPTORS
| Molecular Weight | 220.25 g/mol |
|---|---|
| XLogP3 | 1.3 |
| Hydrogen Bond Donor Count | 2 |
| Hydrogen Bond Acceptor Count | 4 |
| Rotatable Bond Count | 2 |
| Exact Mass | 220.04188206 g/mol |
| Monoisotopic Mass | 220.04188206 g/mol |
| Topological Polar Surface Area | 95.2 Ų |
| Heavy Atom Count | 15 |
| Formal Charge | 0 |
| Complexity | 220 |
| Isotope Atom Count | 0 |
| Defined Atom Stereocenter Count | 0 |
| Undefined Atom Stereocenter Count | 0 |
| Defined Bond Stereocenter Count | 0 |
| Undefined Bond Stereocenter Count | 0 |
| Covalently-Bonded Unit Count | 1 |
| Compound Is Canonicalized | Yes |
PRODUCT INTRODUCTION
description
Thidiazuron is a member of ureas.