Name | Fenclorim |
Synonyms | SOFIT femclorim NSC 27713 Fenclorim CGA-123407 fenclorime cga-123407 Fenclorime BRN 0142293 Fenclorim [ISO] fenclorim, fenclorime 4,6-dichloro-2-phenylpyrimidine 4,6-dichloro-2-phenyl-pyrimidin 4,6-DICHLORO-2-PHENYLPYRIMIDINE Pyrimidine, 4,6-dichloro-2-phenyl- 5-23-08-00007 (Beilstein Handbook Reference) |
CAS | 3740-92-9 |
InChI | InChI=1/C10H6Cl2N2/c11-8-6-9(12)14-10(13-8)7-4-2-1-3-5-7/h1-6H |
Molecular Formula | C10H6Cl2N2 |
Molar Mass | 225.07 |
Density | 1.363±0.06 g/cm3(Predicted) |
Melting Point | 92-93°C |
Boling Point | 235.5±33.0 °C(Predicted) |
Flash Point | 118.9°C |
Solubility | Chloroform (Slightly), DMSO (Slightly), Methanol (Sparingly) |
Vapor Presure | 0.0762mmHg at 25°C |
Appearance | neat |
Color | Off-White to Pale Yellow |
BRN | 142293 |
pKa | -4.69±0.30(Predicted) |
Storage Condition | Inert atmosphere,2-8°C |
Refractive Index | 1.604 |
Physical and Chemical Properties | Colorless crystals. Melting point of 96.9 ° C, the relative density of 1.5, soluble in acetone, cyclohexanone, dichloromethane, toluene, xylene, hexane-soluble, methanol, octanol, isopropanol. |
Use | Safety herbicide |
Hazard Symbols | Xn - Harmful |
Risk Codes | R20 - Harmful by inhalation R43 - May cause sensitization by skin contact |
Safety Description | 36/37 - Wear suitable protective clothing and gloves. |
UN IDs | 3077 |
WGK Germany | 2 |
RTECS | UV8258400 |
Hazard Class | 9 |
Packing Group | III |
overview | dioxidine is a kind of pyrimidine herbicide safety agent. dioxidine can improve the selectivity of herbicides, protect the safety of crops and the environment, expand the scope of use, eliminate the residue of herbicides in the soil, and is an ideal antidote for herbicides. |
physical and chemical properties | pure product is colorless crystal, melting point 96.9 ℃, density 1.5g/cm3, vapor pressure 12mPa at 20 ℃. Solubility in water at 20 ℃ 2.5mg/L, soluble in acetone, dichloromethane, cyclohexanone, isopropanol, toluene and xylene. Kow14800. Stable below 400 ℃, half-life DT5017 ~ 35 days in soil. |
dosage form | Sofit; Slfi Combi; Sofit Super. |
characteristics and application | pyrimidine herbicide safener is used to protect wet-sown rice from proachlor. Tropical and subtropical conditions are generally used in a mixture of 100~200gai/hm2 and prochlorachlor (ratio 1: 3), and the ratio in temperate zone is 1: 2. There was no effect on the growth rate of rice leaves. When propachlor is applied to roots and branches and leaves, the weeding effect is somewhat delayed; it is also effective to apply this product to rice before applying herbicide. Field tests showed that herbicide application had the best effect two days after the safener was absorbed, while the application of proachlor for 1~4 days would greatly affect the recovery of crops. (2015-09-24) |
Preparation method | N-(a-chlorobenzyl) carbamoyl chloride and acetonitrile (molar ratio 1:2) are mixed in chlorobenzene, The dry hydrogen chloride gas is introduced under cooling, and then reacted at 30~35°C. After the reaction is completed, the solvent is evaporated to obtain a solid product. Fig. 1 is the preparation of dioxidine |
toxicity | acute oral LD50>5000mg/kg in rats, acute percutaneous LD50>2000mg/kg in rats, and acute inhalation of LC50(4 hours)> 2.9mg/L air in rats. It has slight irritation to rabbit skin, no irritation to eyes, and no allergy to guinea pig skin. The non-effective dose of the 90-day feeding test was 100mg/kg feed for rats. Japanese quail acute oral LD50> 500mg/kg. Rainbow trout LC50(96 hours) 0.6mg/L. Non-toxic to bees. |
use | a safety agent used together with proachlor. is a safe herbicide |