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Zhishang Chemical

Carbaryl Dust CAS 63-25-2

Molecular Formula: C12H11NO2

Formula Weight: 201.22

ZSpharmac: Carbaryl Dust Supplement

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Product Name: Carbaryl Dust
CAS No: 63-25-2
Purity: 99%

Basic Info

Product Name:Carbaryl Dust
Other Names:Carbaryl
CAS:63-25-2
Place of Origin:Shandong, China
Brand Name:ZSpharmac
Type:Pesticide Intermediates
Appearance:White Crystals
EINECS No.:200-555-0
Storage:Sealed in Dry,Room Temperature
Provide:Carbaryl Dust MSDS;
Carbaryl Dust COA

What is Carbaryl Dust?

Carbaryl Dust is a carbamate formed by the condensation of 1-naphthol and methylcarbamic acid. It acts as an EC 3.1.1.7 (acetylcholinesterase) inhibitor, carbamate pesticide, EC 3.1.1.8 (cholinesterase) prevention, acaricide, agrochemical and plant development retarder. It belongs to carbamate as well as naphthalene. It is originated from methylcarbamic acid as well as 1-naphthol.

Carbaryl Dust is an insecticide utilized in many crops. Intense (short-term) and also chronic (long-term) job-related direct exposure to carbaryl has actually been observed in humans to trigger cholinesterase inhibition, and also reductions in blood degrees of this enzyme lead to neurological effects. These impacts appear to be relatively easy to fix after cessation of exposure. Frustrations, amnesia, muscle mass weakness and aches, and also anorexia are triggered by chronic, low-level exposure to carbaryl due to cholinesterase inhibition. The EPA has actually categorized carbamide as Team D and can not be categorized as carcinogenic to human beings.

Carbaryl Dust Properties:

Melting point 142-146 °C (lit.)
Boiling point 315°C
density d2020 1.232
vapor pressure 2 (x 10-3 mmHg)at 40 °C (Meister, 1988)
refractive index 1.5300 (estimate)
Fp 202.7°C
storage temp. Sealed in dry,Room Temperature
solubility Moderately soluble in acetone, cyclohexanone, N,N-dimethylformamide (400–450 g/kg), and isophorone (Windholz et al., 1983; Worthing and Hance, 1991)
form Crystalline
pka12.02±0.46(Predicted)
color Crystals
Water Solubility Insoluble. 0.00826 g/100 mL

 

Carbaryl Dust Uses

  1. Carbaryl Dust is a broad-spectrum carbamate pesticide with high efficacy, low toxicity, reduced deposit and also long residual impact. It has a solid call murder result on insects, as well as has both stomach poisoning and small systemic impact. It is used to manage cotton bollworm, fallen leave roller, cotton aphid, bridge worm, thrips and also rice leafhoppers, rice leaf rollers, rice budworms, rice thrips as well as fruit tree parasites, and also can also manage veggie garden snails, slugs and various other software animal. The typical dosage is 2.6 ~ 20g/100m2.
  2. Carbary Dirt is used to control rice planthoppers, leafhoppers, thrips, bean aphids, soybean predators, cotton bollworms and fruit tree parasites, forestry parasites, and so on.
  3. Carbaryl Dust is a carbamate pesticide with get in touch with and also belly poisoning effects as well as small systemic properties. It can control more than 100 type of bugs of greater than 150 sort of plants.
    It has far better control result on bugs resistant to organochlorine and organophosphorus. The dose is usually 375-750g energetic ingredients per hectare. It is very toxic to as well as ought to not be used in beekeeping locations during the flowering season.
  4. Carbaryl Dust is utilized as a pesticide.
    Calibration tools and device; examination techniques; functioning standards; top quality assurance/quality control; various other.

Carbaryl Dust Production Method

Isocyanate method
Preparation of methyl isocyanate Methylamine and phosgene are directly subjected to gas chromatography reaction at high temperature, and the reactor is a pipeline. The reaction temperature is higher than 400°C, and the material of the reactor is steel-lined graphite. The prevention of by-products and the elimination of reactor clogging are key in production. The main equipment of the methyl isocyanate separation and purification system is a dephosgenation tower, and the purified methyl isocyanate tower is a valve tower with 90 trays, all of which are made of high-nickel alloy steel materials.

The synthesis reaction of Carbaryl Dust is carried out in the presence of a solvent at a temperature of 60-80°C and a slight negative pressure. The resulting mixed solution is distilled, and the excess methyl isocyanate is distilled off from the top of the distillation column together with part of the solvent, and then reused. Carnavale is refined in solution to obtain pure product.

Chloroformate method
Preparation of naphthyl chloroformate Dissolve 100kg of naphthol and 200kg of toluene, pump into a reactor containing 600kg of toluene, stir, cool down to below -10°C, stop stirring, and introduce about 224kg of phosgene, and pass through in 4 hours. Begin to add alkali dropwise, control the temperature below 0°C, drip 400-500kg 20% ​​lye solution in about 2 hours, make the pH of the brine layer = 6, drain off the salt water, and wash the naphthyl chloroformate twice with water, the general ester content is 14% to 15%.
The synthesis temperature of carbaryl is kept at 10~20℃, about 80kg of 40% monomethylamine is added dropwise at about 40min, then 120kg of 20% liquid caustic soda is added dropwise at about 10℃ in about 20min, stirred for 10min, and added dropwise to 30 % hydrochloric acid 80kg, the measured pH value is 5-6. The product is obtained after separation, washing and drying.

carbamoyl chloride method
Preparation of methylcarbamoyl chloride Methylcarbamoyl chloride was synthesized by chloroformylation of methylamine. The liquid-phase method and the gas-phase method are commonly used in industry, among which the gas-phase method has a higher yield and is easy to be continuous. The gas phase method is to heat methylamine to above 200 °C and phosgene to above 150 °C. After the two gases are mixed, they pass through a pipeline reactor at 240 to 300 °C. Or carbon tetrachloride cycle absorption. The main process conditions are: the ratio of monomethylamine and phosgene is 1:1.3 (volume ratio), the preheating temperature of methylamine and phosgene is 220-240°C, the reaction temperature is 280-300°C, and the absorption temperature is 0-20°C .
The synthesis of carnaphthalene is to prepare sodium naphthol with dilute lye, and add methylcarbamoyl chloride dropwise when the temperature reaches 0 to 5°C. During the dropwise addition, the lye should be continuously supplemented until the pH value reaches 7.5. When ~8.0, the reaction reaches the end point, and the reaction time is about 30-40 min. Centrifugation, washing and drying to obtain the finished product with a content of more than 90%.
The synthesis of Carbaryl Dust can also be produced by a solvent method or a solvent-free method.

Carbary Dust Environmental Home

The production of Carbary Dust may result in its release into the environment through various waste streams; its use as a pesticide will result in its direct release into the environment. If released into air, a vapor pressure of 1.36X10-6 mm Hg at 25 °C indicates that carbaryl will exist in both the vapor and particulate phases in the atmosphere. Carnacarb in the gas phase will degrade in the atmosphere by reacting with photochemically generated hydroxyl radicals; the half-life of this reaction in air is estimated to be 15 hours. The particulate phase carbaryl will be removed from the atmosphere by wet or dry deposition. The photolysis half-life of carbamide films irradiated at >290 nm is 51.66 h at 33-36 °C. If released into soil, carbaryl is expected to be moderately mobile based on measured Koc values ​​of 230, 370 and 390. According to the Henry’s Law constant of 2.8X10-9 atm-cu m/mole, volatilization from moist soil surfaces is not expected to be a significant fate process.

Based on its vapor pressure, Sibali is not expected to evaporate from dry soil surfaces. Carnacarb is expected to photolyze slowly on topsoil at a rate that depends on water content. The average biodegradation half-life for the four different soils was 10 days, suggesting that biodegradation is an important environmental fate process in soils. If released into water, carbaryl is expected to adsorb into suspended solids and sediments based on the Koc value. The reported half-life of cabalil in the aquatic environment is 1.7 days in river water and 5.8 days in mountain streams. In pristine seawater, carbaryl was biodegraded to undetectable levels within 96 hours. Based on the Henry’s Law constant for this compound, volatilization from the water surface is not expected to be a significant fate process. BCF values ​​of 34, 30, and 9 indicate lower bioconcentrations in aquatic organisms. At 20 °C, the hydrolysis half-lives of carbaryl are 10.5 days, 1.8 days, 2.5 hours, and 15 minutes for water at pH 7, 8, 9, and 10, respectively. In neutral and alkaline soils, carbaryl is expected to hydrolyze rapidly. In acidic soils, hydrolysis is expected to occur more slowly. Occupational exposure to carbaryl may occur through inhalation and dermal exposure to this compound in workplaces where carbaryl is produced or used. Workers involved in the production, formulation and application of carbamide as a contact pesticide for fruits, vegetables, cotton and other crops are particularly exposed to carbamide. Surveillance data suggest that the general population may be exposed to carbamide through inhalation of ambient air, ingestion of food and drinking water, and skin contact with the compound.

Company Profile and Corporate Culture

Company Profile:

ZhiShang Chemical is owned by ZhiShang Group is a professional new-type chemicals enterprise combined into research and development, production and sales .

The company’s competitive product is pharmaceutical raw materials and intermediates (especially carbohydrate derivatives Series), In recent years, the company has made a major breakthrough in food and feed additives, plant extraction, industrial chemicals industry .

The company insists on the spirit of “sincere management, strict quality control, customer as god” , get consistent high praise from customers at home and abroad.

Corporate Culture:

OUR MISSION
Help China Chemicals to benefit the happiness of human life
OUR VISSION
Become the most trusted chemical supplier in the world
OUR BUSINESION PHILOSOPHY
Striver – oriented, enrich employees, customer first, deep service, seek development
OUR VALUES
Be prepared for danger in times of peace, forge ahead actively, unity and cooperation, and be brave to fight

About Us

The production base is located in Zhangqiu chemical industry park and Tai’an high-tech chemical industry park. laboratory and workshop in strict accordance with the GMP standard and the product fit national ISO9001 and ISO2000 standards.

“Zhishang” products are exported to Europe, North and South America, the Middle East, Asia Pacific and Africa area, so as to establish a long-term and stable cooperation relationship with customer in the world.

Company Info
  • Business Type: Manufacturer
  • Product Range: Additive , Chemical Auxiliary & Catalyst , Organic Chemicals
  • Products/Service: Organic Intermediate,Inorganic Chemistry, APIs, Dyestuffs And Pigments, Fragrance And Spices, Food Additives
  • Total Employees: 51~100
  • Capital (Million US $): 10000000RMB
  • Year Established: 2016
Production Capacity
  • No. of Production Lines : 8
  • No. of QC Staff : 5 -10 People
  • OEM Services Provided : yes
  • Factory Size (Sq.meters) : 3,000-5,000 square meters
  • Certificate: ISO9001 , CE , GMP , API , MSDS
  • Factory Location : Diao Town Industry Park, Zhangqiu City, Jinan City, Shandong Province, China.

Service

Pre-Sales Service

* Prompt reply and 24 hours online, professional team to provide best price and high quality product.

* Sample testing support.

* Every batch of products will be tested to ensureits quality.

*The packing also can be according the customers` requirment.

*Any inquiries will be replied within 24 hours.

*we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate. If your markets have any special requirements, let us know.

 

After-Sales Service

*The fact of logistics information monitoring.

* Any questions about the product can be consulted at any time.

*Product has any problem can return.

FAQ

Do you accept sample order?

We will make samples before mass production, and after sample approved, we’ll begin mass production. Doing 100% inspection during production, then do random inspection before packing.

 

HOW TO CONFIRM THE PRODUCT QUALITY BEFORE PLACING ORDERS?

You can get free samples for some products,you only need to pay the shipping cost or arrange a courier to us and take the samples. You can send us your product specifications and requests,we will manufacture the products according to your requests.

What’s your MOQ?

Our MOQ is 1kg. But usually we accept less quantity such as 100g on the condition that sample charge is 100% paid.

Do you supply product report?

Yes. We’ll give you product analysis report before shipping.

  Is there a discount?

Different quantity has different discount.

Shipping

1. ≤50kg, Express delivery recommended, usually called as DDU service;

2. ≤500kg, Air shipping recommended, usually called as FOB, CFR, or CIF service;

3. >500kg, sea shipping recommended, usually called as FOB, CFR, or CIF service;

4. For high value products, please select air shipping and express delivery for safe.

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