N,N'-Diethylthiourea NEW

Product Description

Appearance and properties: white to light yellow solid

Density: 1,12 g/cm3

Boiling point: 169.2ºC at 760 mmHg

Melting point: 76-78 °C(lit.)

Flash point: 186 °C

Refractive index: 1.505

Water solubility: 38 g/L (20 ºC)

Stability: Stable. May be air sensitive. Incompatible with strong oxidizing agents.

Storage conditions: Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances.

Vapor pressure: 1.56mmHg at 25°C

Production method

1. Obtained by the reaction of ethylamine with carbon disulfide. First, the ethylamine is added to the reactor, heated to 35 ~ 40℃ under stirring, and then the carbon disulfide is added while stirring, and the drip is completed within 40 ~ 45min. Then the temperature was heated to 95℃ and the reaction was maintained for 3h. Then the temperature is lowered to 50℃. The product is cooled, filtered, washed and dried to obtain the finished product. The product content is 92% and the yield is 80%.

2. The reaction of ethylamine aqueous solution with carbon disulfide at 20 ~ 30℃ resulted in the formation of  ethylamine ethyl dithiocarbamate. The substance is decomposed at 96 ~ 100℃, and after releasing hydrogen sulfide gas, it is separated, washed, crystallized, crushed, and dried to obtain the finished product.

Use

1. It can be used as thiourea accelerator, which is also a butyl adhesive accelerator and a vulcanizing active agent of epDM.

2. The chloroprene vulcanizate with good properties such as tensile strength, hardness and compression permanent deformation can be prepared. Compared with NA-22(ethylidene thiourea), the char and vulcanization are fast, but the vulcanization flatness is better. This product disperses easily and does not spray frost. When the amount is large, high temperature and high speed vulcanization can be carried out, especially suitable for continuous vulcanization of pressed products. This product is also butyl adhesive accelerator, ethylene ternary rubber vulcanizing active agent. Thiazoles and sulfanilides can be activated in natural and butadiene gum. It has antioxidant effect on natural rubber, neoprene rubber, nitrile rubber and styrene butadiene rubber. Generally used for manufacturing industrial rubber products, special wire, sponge products, etc. The general dosage of chloroprene compound is 0.25 to 1 part. The dosage of natural rubber and styrene butadiene rubber is 0.3 ~ 1.5 parts, and it is combined with 0.3 ~ 1.5 parts of accelerator DM. It is also used in the preparation of corrosion inhibitor Rodine 31A.

3. Efficient corrosion inhibitor, can be added to the acid solution alone as a corrosion inhibitor for ferrous metals, can also be combined with sulfamic acid and citric acid to make a solid cleaning agent. Also used in copper dissolution accelerator.

4. Used as an accelerator for neoprene rubber and styrene butadiene rubber adhesives. Vulcanization and coke burning faster than accelerator NA-22, high temperature rapid vulcanization can be carried out when the amount is large, especially suitable for continuous vulcanization of pressed products, products compression deformation is small, good aging resistance. Also used as vulcanization activator of EPDM rubber. It has antioxidant effect on natural rubber, nitrile rubber, styrene butadiene rubber and neoprene rubber. Easy to disperse when operating, no spray frost, generally used in industrial products, sponge products and special wires. It is also used as a raw material for preparation of corrosion inhibitors.

Company Profile

Our Advantages

1. Rich experience: Our company is a professional production leading factory in China in pharmaceutical area of many years. 

2. Top quality: High quality guaranteed, once any problem is found, the package would be reshipped for you .

3. Security Shipping: Shipping by express (FedEx,UPS,DHL,EMS), by air. The most professional forwarder would be 

recommanded for you.

4. Fast delivery: We have stock, so we can delivery quickly once payment is received.

5. Quality service: We will give you warm after-sale service,if any question we will reply you within 24 hours.

6. Competitive prices: A discount would be given when you make a large order.

FAQ

Q1: How can I place the order? 
A: You can send your requirement here on line,or send your purchase plan to us. We will send you Proforma Invoice with our bank details for your confirmation, then you can make payment accordingly. 
Q2: Can I test the quality before placing the order? 
A: Sure. Samples are available. You can buy samples to test the quality and there will be discount for samples. 
Q3: What's your MOQ? 
A: It depends on the products. Please feel free to contact our salesman. 
Q4: Is there a discount? 
A: Yes. For large quantity, we always offer better prices.