Highly Purified ≥ 99% Thiourea White Crystal Particle for Chemical Materials
Key attributes
Products: Thiourea 99% , CS ( NH2) 2,belongs dangerous chemical.
Physical and chemical properties:
Appearance: white crystal powder; Density: 1.405; Molecular weight: 76.12
Melting point: 171-175℃; Boiling point: 349 to 352°F (NTP, 1992).
Production standard
CAS: 62-56-6
Products meets GB/8218-2018:
| No. | Items for detecting and analyzing | Standard value |
| 1 | Thiourea ( CS ( NH2) 2) ％≥ | 99.0 |
| 2 | Heating interval ％≤ | 0.35 |
| 3 | Chemical moisture ％≤ | 0.01 |
| 4 | Water insoluble ％≤ | 0.02 |
| 5 | Thiocyanate (CNS) ％≤ | 0.02 |
| 6 | Melting point (centigrade) | 171 OC |
References: Riel Chemical Lab1&2, National public service platform for standards information.
Physicochemical property
| Molecular weight: 76.12 g/mol | Appearance: White or light yellow crystalline powder, glossy. |
| Odor: Odorless or slightly sulphide odor. | Density: 1.405 g/cm³ (20°C). |
| Melting point: 176-178°C (decomposition). | Chemical Safety: Class 6.1 toxic substances |
| Solubility: Water: soluble in water (about 13.7g /100 mL, 20°C); Ethanol: slightly soluble in ethanol. |
| Acid base: Thiourea is weakly basic and can react with acids to form salts. |
| Reducibility: Thiourea has a certain reducibility and can be oxidized by oxidants (such as hydrogen peroxide, potassium permanganate). |
| Complexation: Thiourea forms complexes with metal ions (e.g. Ag +, Au +, Cu² +) and is often used in metal extraction and electroplating industries. |
| Thermal stability: When heated above the melting point, it decomposes, producing ammonia, hydrogen sulfide and other gases. |
| Hydrolysis reaction: Hydrolysis under acidic or alkaline conditions to produce urea and hydrogen sulfide. |
Thiourea use
1. Chemical industry
Reducing agent: Thiourea is commonly used as a reducing agent, especially in the reduction reaction of metal ions.
Coordination agent: It can form stable complexes with a variety of metal ions for metal separation
and purification.
Organic synthesis: Thiourea is an important intermediate for the synthesis of
many organic compounds (such as thioamides, heterocyclic compounds).
2. Electroplating industry
Plating additive: Thiourea is used in electroplating solution to improve the gloss and uniformity of the coating,
especially in the plating process of silver, copper, zinc and other metals.
Corrosion inhibitor: It can inhibit the corrosion of the metal surface and extend the life of the coating.
3. The field of medicine
Drug synthesis: Thiourea is an intermediate in the synthesis of certain antibiotics,
anti-thyroid drugs (such as propylthiouracil), and anti-cancer drugs.
Antioxidants: Thiourea has certain antioxidant properties and can be used in pharmaceutical preparations.
4. Agriculture
Fungicides and insecticides: thiourea can be used to prepare certain pesticides for the control of crop diseases and pests.
Plant growth regulators: In some cases, thiourea can promote plant growth or regulate plant physiological processes.
FAQ
1.What is your payment term?
We can accept T/T and L/C at sight as payment term.
2.Are you able to deliver on time?
Of course! we specialised in this line for many years,
many customer make a deal with me because we can deliver the goods on time
and keep the goods top quality!
3.Do you provide free sample?
Yes, we can provide free sample . You only need to take the express fee.
4.How about the price?Can you make it cheaper?
We always take the customer’s benefit as the top priority.
Price is negotiable under different conditions, we are assuring you to
get the most competitive price.
5.Can I visit your company and factory in China?
Sure. You are very welcomed to visit our company in Weifang, China.
(We will have someone responsible for picking up and dropping off at Weifang Airport)
6.What if there is a quality problem?
We have a professional and perfect after-sales service team, timely for you to
deal with all problems.
Product Tags:
|
|
Highly Purified ≥ 99% Thiourea White Crystal Particle for Chemical Materials Images
|
