Pretilachlor
Pretilachlor
CAS: 51218-49-6
Molecular Formula: C17H26ClNO2
Pretilachlor - Names and Identifiers
| Name | Pretilachlor |
| Synonyms | RIFIT SOFIT SOLNET 51218-49-6 Pretilchlor Pretilachlor PRETILACHLOR N-Propoxyethyl-N-chloroacetyl-2,6-diethylaniline 2,6-Diethyl-N-(2'-n-propoxyethyl)chloroacetanilide 2-CHLORO-2',6'-DIETHYL-N-(2-PROPOXYETHYL)ACETANILIDE 2-Chlor-N-(2,6-diethylphenyl)-N-(2-propoxyethyl)acetamid 2-Chloro-N-(2,6-diethylphenyl)-N-(2-propoxyethyl)acetamide 2-Chloro-N-(2,6-diéthylphényl)-N-(2-propoxyéthyl)acétamide 2-chloro-n-(2,6-diethylphenyl)-n-(2-propoxyethyl)-acetamid |
| CAS | 51218-49-6 |
| InChI | InChI=1/C17H26ClNO2/c1-4-11-21-12-10-19(16(20)13-18)17-14(5-2)8-7-9-15(17)6-3/h7-9H,4-6,10-13H2,1-3H3 |
Pretilachlor - Physico-chemical Properties
| Molecular Formula | C17H26ClNO2 |
| Molar Mass | 311.85 |
| Density | 1.0521 (rough estimate) |
| Melting Point | 25°C |
| Boling Point | bp0.001 135° |
| Flash Point | 221.1°C |
| Water Solubility | Insoluble in water |
| Vapor Presure | 5.2E-08mmHg at 25°C |
| Appearance | neat |
| Specific Gravity | 1.076 (20℃) |
| Color | Light yellow to Brown |
| Merck | 14,7740 |
| BRN | 2754162 |
| pKa | 1.41±0.50(Predicted) |
| Storage Condition | Inert atmosphere,2-8°C |
| Refractive Index | nD20 1.5204 |
| Physical and Chemical Properties | The pure product is a colorless liquid. B. p.135 °c/0.1, relative density 1.076 (20 °c), vapor pressure 0.133 x 10-3Pa. Soluble in most organic solvents, 20 degrees in water solubility of 50mg/L, partition coefficient (octanol/water) 12020. Stable After 2 years storage at room temperature. 20 C hydrolysis half-life 200d (pH = 1~9), 14d (pH = 13), the half-life of 20 ~ 50d in soil. |
| Use | It can be used to control weeds in paddy fields, such as Cyperus papyrifera, beef felt, duck tongue grass and node vegetables. |
Pretilachlor - Risk and Safety
| Risk Codes | R38 - Irritating to the skin R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S60 - This material and its container must be disposed of as hazardous waste. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| UN IDs | UN 3082 9/PG 3 |
| WGK Germany | 2 |
| RTECS | AB5427000 |
| HS Code | 29242990 |
| Hazard Class | 9 |
| Packing Group | III |
| Toxicity | LD50 in rats (mg/kg): 6099 orally; >3100 dermally (Rufener, Quadranti); LC50 in rainbow trout, carp, catfish: 3.0, 3.0, 2.6 ppm (Vogel, Aebi) |
Pretilachlor - Upstream Downstream Industry
| Raw Materials | 2,6-Diethylaniline Chloroacetyl chloride |
Pretilachlor - Nature
Open Data Verified Data
The Pure product was a colorless liquid. Relative density (20 C) 1. 076. The solubility in water at 20 C is 530 X lO-6, which is soluble in most organic solvents.
Last Update：2024-01-02 23:10:35
Pretilachlor - Preparation Method
Open Data Verified Data
obtained by reacting 2,6-= ethylphenylaminoethyl propyl ether with Chloroacetyl Chloride. Alternatively, it is prepared by reacting 2,6-ethylphenyl aminoethanol with Chloroacetyl Chloride and then with bromopropane.
Last Update：2022-01-01 10:12:39
Pretilachlor - Use
Open Data Verified Data
selective pre-emergence herbicides, inhibitors of cell division. It is used for soil treatment, and can be used to control rice fields such as humulus scandens, atypical Cyperus, beef felt, duck tongue grass, and Alisma orientalis. Single application of wet inserted rice selectivity is poor, when used with the solution of the grass, the direct insertion of rice has excellent selectivity. Weeds through the hypocotyl and coleoptile absorption of chemicals, interference with protein synthesis, photosynthesis and respiration of weeds also have an indirect impact. It can be used to control weeds in paddy fields, such as humulus scandens, duck leaves grass, atypical Cyperus papyrifera, motherwort, cow felt, and grass, and has poor control effect on perennial weeds.
Last Update：2022-01-01 10:12:40
Pretilachlor - Safety
Open Data Verified Data
The oral LD50 of the original drug to rats was 6099mg/kg, and the percutaneous LD50 was> 3100mg/kg. The non-effective dose for the half year feeding trial in dogs was 7.5 rng/kg per day. No carcinogenic, teratogenic and mutagenic effects were found in animal experiments. Rainbow trout, carp, catfish LCs50 was 3.O× 10 -6, 3.O× 10 -6, 2.6 × lo-5. There is a certain stimulation of the skin, a slight stimulation of the eyes, toxic to bees.
Last Update：2022-01-01 10:12:40
Pretilachlor - Reference Information
| NIST chemical information | Information provided by: webbook.nist.gov (external link) |
| brief introduction | propachlor, also known as scavenger, is mainly used in direct seeding rice fields. a correct grasp of the use method has the characteristics of safe growth of direct seeding rice, wide grass killing spectrum, good weeding effect, etc., can basically control the damage of weeds in the whole growth period, and is currently an ideal medicine for the control of resistant weeds such as barnyard grass and gold. |
| Application | Prochlor is a 2-chlorinated acetoaniline herbicide, which is a selective bud pretreatment agent. It can be absorbed by plant hypocotyl, mesocotyl and coleoptile, and slightly absorbed by roots, which directly interferes with protein synthesis in weeds and has indirect effects on photosynthesis and respiration. Rice has a strong ability to decompose alachlor, thus having a certain selectivity. Rice germination period is more sensitive to alachlor, in order to ensure the safety of early medication, alachlor is often added to the solution. |
| toxicity | the original drug has an acute oral LD50 of 6099mg/kg, an acute percutaneous LD50 of 3100mg/kg and an acute inhalation of LC50 of 2.8mg/L (4h) for rats. The non-effective dose of dog feeding test for half a year is 7.5 mg/kg per day. Animal experiments showed no carcinogenic, teratogenic and mutagenic effects. Carassius auratus LC50 is 2.3mg/L, rainbow trout LC50 is 0.9mg/L (both 96h); It has certain irritation to skin, slight irritation to eyes and toxic to bees. |
| use | selective pre-bud herbicide, cell division inhibitor. Weeds absorb chemicals through mesocotyls and coleoptiles, interfere with protein synthesis, and have indirect effects on photosynthesis and respiration of weeds. Generally, soil treatment is used to control weeds such as barnyard grass, duck leaf grass, shaped sedge, mother grass, cow felt, zao, firefly, etc. in paddy fields, and the control effect on perennial weeds is poor. The dosage is 4.5~5.3g/100 m2, such as rice seedling field or direct seeding field, 30% emulsifiable concentrate 15~17mL/100 m2 is used to spray water or mix poisonous soil. The dosage is low in the southern or subtropical areas, and the northern areas need to be tested before application. It can prevent and remove weeds such as profiled sedge, cow felt, ducktongue grass, and festival vegetables in rice fields Calibration instruments and devices; evaluation methods; working standards; quality assurance/quality control; others. |
| production method | preparation method 1 is prepared by the reaction of 2, 6-diethylphenylaminoethyl propyl ether and chloroacetyl chloride. The second preparation method is prepared by reacting 2, 6-diethylphenylaminoethanol with chloroacetyl chloride, and then reacting with bromopropane. |
| category | pesticide |
| toxicity classification | poisoning |
| acute toxicity | oral-rat LD50: 2200 mg/kg; Oral-mouse LD50: 1800 mg/kg |
| stimulation data | skin-rabbit 500 mg severe; Eye-rabbit 100 mg mild |
| flammability hazard characteristics | Combustion produces toxic nitrogen oxides and chloride gases |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; separate from food raw materials storage and transportation |
| fire extinguishing agent | sand, dry powder, foam |
Last Update：2024-04-09 02:00:09
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Raw Materials for Pretilachlor