Cas62-56-6 CH4N2S Thiocarbamide White Crystal Particle For Metal

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:

Electroplating grade - more uniform coating and less waste liquid

Problem: Common thiourea has a high moisture content → the plating solution decomposes → the coating turns black and has many pores
Our plan:
Moisture content ≤0.1% → Electrolyte stability increases by 30%
Case: The yield rate of a certain PCB factory increased from 85% to 96% (with comparison chart attached)
Pharmaceutical grade - Ultra-low impurities, worry-free declaration

Critical control points:
DMF residue <10ppm (HPLC chromatogram provided)
Heavy metals <5ppm (conforming to ICH Q3D)
Applicable: Synthesis of antibiotic intermediates and contrast agents
Research grade - Data can be reproduced and papers can be used

Provided:
Batch inspection raw data (downloadable in PDF)
Typical application literature (Lithium-Sulfur Battery/Corrosion Inhibitor Research)

Application of Thiourea

1.Metalworking and surface treatment
Plating additives: thiourea is used as brightener and stabilizer in electroplating solution for silver plating,

gold plating and other precious metals to improve the gloss and adhesion of the coating.

Metal corrosion inhibitor: During pickling and rust removal, thiourea is used as a corrosion inhibitor

to protect metal surfaces from excessive corrosion.

2. Ore flotation and metallurgy
Flotation agent: Thiourea is used as a collector or inhibitor in the flotation of metal ores,

especially in the flotation process of copper, lead, zinc and other sulfide ores to improve metal recovery.

Precious metal extraction: thiourea can be used as a leaching agent for the extraction of precious metals such as gold

and silver, replacing the traditional cyanide method to reduce environmental pollution.

3. Chemical and Materials Science
Resin modification: thiourea is used to modify phenolic resin and urea-formaldehyde resin

to improve its heat resistance, mechanical properties and processing properties.

Plastic additives: as antioxidants or stabilizers, extend the service life of plastic products.

Functional materials: thiourea can be used to synthesize functional materials with special optical,

electrical or magnetic properties.

4. Environmental protection and resource recycling
Wastewater treatment: Thiourea is used

to remove heavy metal ions (such as mercury, cadmium, lead, etc.) from wastewater by forming stable complex precipitation.

Exhaust gas purification: thiourea can be used to remove sulfur dioxide (SO₂)

and nitrogen oxides (NOₓ) from industrial exhaust gases.

Battery recycling: In the recycling process of used batteries, thiourea is used

to extract valuable metals such as cobalt and nickel.

5. Medicine and Biotechnology
Drug synthesis: Thiourea is an important intermediate for the synthesis of antibacterial,

antiviral and anticancer drugs.

Protein research: Thiourea is used for denaturation and renaturation of proteins

and has important applications in biotechnology and life sciences.

6. Agriculture and food industry
Plant growth regulators: thiourea has the potential to improve crop stress resistance and yield,

and may become a new growth regulator in the agricultural field.

Food preservative: Thiourea is used as an antioxidant and preservative to keep food fresh and extend shelf life.

7. Photography and video technology
Developer: thiourea is used in the development process of black

and white photos to speed up the development reaction and improve the image quality.

8. Laboratory and scientific research
Analytical reagents: Thiourea is used to detect metal ions (such as bismuth, antimony, etc.) and organic compounds.

Crystal growth: Thiourea is used as a solvent or additive in crystal growth experiments

to regulate crystal morphology and size.

9. New energy and sustainable development
Battery technology: thiourea, as an electrolyte additive, can improve the charge

and discharge performance and cycle life of batteries,

and has broad application prospects in lithium-ion batteries, fuel cells and other fields.

Hydrogen energy storage: thiourea and its derivatives show potential in the research of hydrogen energy storage materials.

10. Other applications
Preservative: Thiourea is used as a preservative in some industrial products to extend their service life.

Preparation of nanomaterials: thiourea, as a reducing agent or template agent,

plays an important role in the preparation of nanomaterials.

1. Precious metal metallurgy (Alternative to cyanide)

Effect: The gold leaching rate is over 95%, the toxicity is only 1/100 of that of the cyanidation method, and the cost of wastewater treatment is reduced by 50%.
Recommended process: Thiourea +Fe³⁺ acidic system, pH=1.5-2.0, temperature 40-50℃.
2. Electroplating additives (Galvanizing/tin)

Advantages: Enhance the density of the coating, reduce pores, and extend the salt spray test time to over 120 hours.
3. Pharmaceutical intermediates

Case: It is used for the synthesis of the antithyroid drug methimazole, with a purity reaching the EP9.0 standard.
4. Dyeing and printing reducing agent

Comparison data: It has higher stability than sodium hyposulfite (sodium hyposulfite) and can be stored for up to 12 months

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.

Riel Chemicals – Leading Enterprise in Basic Chemical Manufacturing

Who we are ?

Established in 2005 and headquartered in Weifang City, Shandong Province—a hub of China’s chemical industry—Riel Chemicals is a national high-tech enterprise specializing in the R&D, production, and sales of specialty chemicals. As a modern chemical manufacturer with independent import-export rights, the company has established a dual-core industrial layout: the main plant in Qingzhou Development Zone (21,000 sqm) and the new production base in Gaoliu Town (12,000 sqm). With a professional team of over 120 employees, the company has achieved an annual output value exceeding $40 million (2023).

Product Portfolio

The company implements a full-industry-chain strategy:

Main Plant (Phosphate Chemistry Focus):

• Basic Chemicals: Trisodium phosphate (annual capacity: 100,000 tons)

• Derivative Products: Sodium tripolyphosphate (150,000 tons), sodium hexametaphosphate (200,000 tons), and related series.

New Production Base (Fine Chemicals Focus):

• Thiourea Series: Industrial/electronic-grade specialty products

• Inorganic Salts: Barium chloride, sodium acetate, and other competitive products

• Organic Acids: Oxalic acid and derivatives

Innovative Applications

Through continuous technological innovation (strategic product line expansion in 2010), Riel Chemicals’ solutions are widely applied in advanced fields:

 √  Industrial water treatment solutions

 √  Electronic chemical preparation

 √  Pharmaceutical manufacturing

 √  Specialty material synthesis

 √  High-end food additive production

Where are we ?

Riel Chemical is headquartered in Weifang China, a city with beautiful scenery and a long history. The company is located in the heart of China's coastal area, with transportation links in all directions, close to the international ports of Qingdao, Shanghai and Tianjin, which makes it more convenient for domestic and foreign customers to visit and cooperate.

What do we have ?

Covering an area of more than 30,000 square meters and with an annual output value of $40 million (2023),

the plant is located in the Economic Development Zone of Shandong Province and focuses on the research and development, production and sales of phosphate and food grade, industrial grade and agricultural grade phosphate products. There are oxalic acid, sodium acetate,

barium chloride, thiourea and other derivative products. A series of phosphate products with an annual output of 100,000 tons of phosphate, 150,000 tons of sodium tripolyphosphate and 200,000 tons of sodium hmetaphosphate are widely used in chemical, food additives,

water treatment, agriculture and other industries to meet the diversified needs of the global market.

We adhere to strict quality standards to ensure that each batch of products meets the high standards of the international market.

Why choose us?

We have advanced technical equipment, strong technical force and perfect testing facilities, committed to providing high quality products and services. The company has established close cooperative relations with authoritative chemical product testing institutions, import and export commodity inspection units and logistics and transportation companies, providing customers with one-stop services from quality inspection, commodity inspection to consignment, to ensure that products are delivered to customers safely and on time.

The company always adheres to the business philosophy of "quality first, small profit and quick sales", and wins the trust of customers in the market with high-quality products and competitive prices.

All our employees are committed to innovation and service improvement, forging ahead to achieve the best interests of our customers. As a trusted phosphate manufacturer, Riel Chemical sincerely welcomes customers from all over the world to visit our factory and join hands to create a mutually beneficial future.

“Long time no see”

You may not be familiar with us, but you have definitely "seen us". Because we have been deeply engaged in domestic produce and trade for 20 years, but we set up a factory directly under foreign trade in 2024, with a team of 12 employees. Why have we met? We supply raw materials to many trading partners and are a trusted foundry. So you've definitely seen our products and "seen us."