25Kg Thiourea 99 Crystal CAS 62-56-6 for Electroplating Additive
CAS 62-56-6 Thiourea 99 Crystal is a high-purity organic sulfur compound used as an electroplating additive. This white glossy crystalline product meets GB/8218-2018 standards with 99% purity and excellent stability.
Product Specifications
| Attribute |
Value |
| CAS |
62-56-6 |
| EINECS |
200-543-5 |
| UN |
2811 |
| Appearance |
White glossy crystal |
| Package |
25Kg/BAG |
| Life span |
Two years |
| Density |
1.41 g/cm³ |
| Molecular weight |
76.121 |
Quality Standards
| No. |
Test Item |
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 (°C) |
171 |
Product Description
Thiourea (SC(NH2)2) is an organic sulfur compound structurally similar to urea but with sulfur atoms replacing oxygen atoms. This substitution results in significantly different properties, making thiourea valuable as an organic synthesis reagent and electroplating additive.
Physical and Chemical Properties
| Molecular weight |
76.12 g/mol |
| Appearance |
White or light yellow crystalline powder, glossy |
| Odor |
Odorless or slight sulfide odor |
| Density |
1.405 g/cm³ (20°C) |
| Melting point |
176-178°C (decomposition) |
| Chemical Safety |
Class 6.1 toxic substances |
Key Characteristics:
- Solubility: Highly soluble in water (13.7g/100mL at 20°C), slightly soluble in ethanol
- Chemical Behavior: Weakly basic, forms salts with acids
- Reducibility: Can be oxidized by strong oxidants like hydrogen peroxide
- Complexation: Forms stable complexes with metal ions (Ag+, Au+, Cu²+)
- Thermal Stability: Decomposes above melting point, producing ammonia and hydrogen sulfide
- Hydrolysis: Reacts under acidic/alkaline conditions to form urea and hydrogen sulfide
Safety and Handling
Personal Protection:
- Respiratory: Use N95 dust masks or gas masks with organic vapor filters
- Skin/Eyes: Wear chemical-resistant gloves (nitrile), protective clothing, and goggles
- First Aid: Flush affected areas with water for 15 minutes, seek medical attention
Operational Requirements:
- Work in well-ventilated areas or fume hoods
- Avoid contact with strong oxidizers (nitric acid, hydrogen peroxide)
- Keep away from acids and high-temperature sources (>150°C)
Storage and Transport:
- Store in sealed containers in cool, dry, dark locations
- Use plastic or glass containers to prevent metal corrosion
- Label as "Irritating Substance" with accompanying MSDS
Environmental Protection:
- Dispose through hazardous waste treatment facilities
- Neutralize spills with inert materials before disposal
- Professional oxidation required for degradation
Company Advantages
Technical Excellence:
With over 20 years of nitric acid production experience, Riel Chemical delivers stable, high-quality products exceeding national standards for rare earth, electronics, and reagent industries.
Quality Assurance:
Our products undergo strict quality control, achieving EU REACH certification. We prioritize green manufacturing through resource recycling and waste reduction initiatives.
Industrial Chain:
Complete production chain from nitric acid to potassium nitrate, magnesium nitrate, and water-soluble fertilizers enhances efficiency and market competitiveness.
Global Reach:
Products exported to 20+ countries including Middle East, Western Europe, Southeast Asia, and the United States.
Frequently Asked Questions
What payment methods do you accept?
We accept T/T and L/C at sight payments.
Can you guarantee on-time delivery?
Yes, our extensive experience ensures timely delivery while maintaining top product quality.
Do you provide free samples?
Yes, we offer free samples with the customer responsible for express shipping costs.
Is price negotiation possible?
We offer competitive pricing tailored to specific order requirements.
Can we visit your factory?
Visitors are welcome at our Weifang facility, with airport transportation provided.
What if quality issues arise?
Our professional after-sales team promptly addresses all quality concerns.
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