Riel Chemical Co., Ltd.
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Buy Ninety-nine percent Sulfourea White Crystal Particle For Drilling Deaerator
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.
Core uses and functions
1. Industrial sector
Electroplating and metal treatment:
Corrosion inhibitor: inhibit metal oxidation in acid gold plating and silver plating solution to
improve coating uniformity (such as PCB circuit board gold plating process).
Brightener: combines with silver ions to form a complex to enhance the gloss of
the coating (a key additive in the jewelry processing industry)
Textile printing and dyeing
Antioxidants: prevent dye oxidation and fading,
improve the color fastness of cotton and silk fabrics (0.5-2%)
Flame retardant treatment: combined with phosphate,
used for flame retardant modification of polyester fiber.
2. Agricultural applications
Fungicides and plant regulators:
Inhibition of fungal spore germination (e.g. control of rice blast), bactericidal by
interfering with bacterial sulfur metabolism.
Promote the breaking of dormancy of tuber crops (potatoes, sweet potatoes) and
increase germination rate (0.1% solution soaking treatment).
3. Medicine and Life Sciences
Drug synthesis:
Synthesis of anti-thyroid drugs (e.g., methimazole),
anti-HIV drugs (e.g., tenofovir intermediates).
Sulfur sources in radiopharmaceutical labeling
(e.g. ⁹⁹mTc labeled developer).
Biochemical research:
Protein denaturant
(concentration 2-4M for urea-thiourea double denaturation electrophoresis).
DNA/RNA stabilizers
(prevent nuclease degradation, for cryogenic sample preservation).
4. Environmental protection and new energy
Heavy metal wastewater treatment:
Formation of complex precipitate with cadmium (Cd² + +)
and lead (Pb² + +) (removal rate > 95% at pH 6-8).
Battery material:
Lithium sulfur battery electrolyte additive,
inhibition of polysulfide shuttle effect (2025 Ningde era patent technology).
Used as an interface passivator in perovskite solar cells,
increasing the photoelectric conversion efficiency to 26.8%.
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.