-
Name
Pyridat
- EINECS 259-686-7
- CAS No. 55512-33-9
- Article Data2
- CAS DataBase
- Density 1.183 g/cm3
- Solubility
- Melting Point 27°
- Formula C19H23 Cl N2 O2 S
- Boiling Point 544.9 °C at 760 mmHg
- Molecular Weight 378.923
- Flash Point 283.3 °C
- Transport Information UN 3077
- Appearance
- Safety Moderately toxic by ingestion and skin contact. Experimental reproductive effects. When heated to decomposition it emits toxic vapors of NOx, SOx, and Cl−.
- Risk Codes R38;R43;R50/53
-
Molecular Structure
-
Hazard Symbols
- Synonyms CL 11344;Fenpyrate; Lentagran; O-(3-Phenyl-6-chloropyridazin-4-yl) octylthiocarbonate;Pl 3419; Pyridate; Tough
- PSA 77.38000
- LogP 6.38950
Pyridat Chemical Properties
IUPAC Name: (6-Chloro-3-phenylpyridazin-4-yl) octylsulfanylformate
The MF of Fenpyrate (CAS NO.55512-33-9) is C19H23ClN2O2S.
 octylsulfanylformate.png)
The MW of Fenpyrate (CAS NO.55512-33-9) is 378.9161.
Synonyms of Fenpyrate (CAS NO.55512-33-9): Carbonothioic acid, O-(6-chloro-3-phenyl-4-pyridazinyl) S-octyl ester ; O-(6-Chlor-3-phenylpyridazin-4-yl)-S-octylthiocarbonat ; pyridate ; Screen ; Thiocarbonate de O-(6-chloro-3-phenyl-4-pyridazinyle) et de S-octyle
Product Categories: PU - PZPesticides&Metabolites;Alpha sort;Herbicides;N-PAlphabetic;P;Pesticides&Metabolites;Pyridazine;Alphabetic
Index of Refraction: 1.56
EINECS: 259-686-7
Density: 1.183 g/ml
Flash Point: 283.3 °C
Boiling Point: 544.9 °C
Storage temp: APPROX (4°C)
Merck: 13,8058
Pyridat Uses
Fenpyrate (CAS NO.55512-33-9) is selective postemergence herbicide. Stems and leaves absorbed quickly and it impede the Hill reaction of photosynthesis, so that leaves turn yellow and stop the growth of weeds, withering death. Applies to wheat, rice, corn and other cereal crops Control in broad-leaved weeds, particularly Galium aparine, Amaranthus retroflexus and some undergraduate weeds.
Pyridat Production
It derived from 6-chloro-3-phenyl-pyridazine-4-Alcohol and S-octyl thio-carbonyl chloride in the presence of triethylamine with benzene as the solvent
Pyridat Toxicity Data With Reference
| 1. | orl-rat LD50:1970 mg/kg | DEVEAA Defense des Vegetaux. 38 (1984),310. | ||
| 2. | orl-mus LD50:10 g/kg | DEVEAA Defense des Vegetaux. 35 (1981),327. | ||
| 3. | skn-rbt LD50:3400 mg/kg | FMCHA2 Farm Chemicals Handbook .(Meister Publishing,Willoughy, OH.: )1991,C257. | ||
| 4. | orl-qal LD50:1500 mg/kg | PEMNDP Pesticide Manual. 9 (1991),743. | ||
| 5. | orl-dck LD50:10 g/kg | PEMNDP Pesticide Manual. 9 (1991),743. | ||
| 6. | orl-brd LD50:10 g/kg | PEMNDP Pesticide Manual. 9 (1991),743. |
Pyridat Safety Profile
Moderately toxic by ingestion and skin contact. Experimental reproductive effects. When heated to decomposition it emits toxic vapors of NOx, SOx, and Cl−.Safety information of Fenpyrate (CAS NO.55512-33-9):
Hazard Codes 
Xi,
N
Risk Statements
38 Irritating to the skin
43 May cause sensitization by skin contact
50/53 Very Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment
Safety Statements
24 Avoid contact with skin
37 Wear suitable gloves
60 This material and/or its container must be disposed of as hazardous waste
61 Avoid release to the environment. Refer to special instructions safety data sheet
RIDADR UN 3077
RTECS FG3880000
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