99% Industrial Grade Thiourea Powder Crystal CAS 62-56-6 Chemical Raw

99% Industrial Grade Thiourea Crystal for industrial raw materials.

Thiourea 99% (CS(NH2)2) is classified as a dangerous chemical with the following properties:

• Appearance: White crystal powder
• Density: 1.405 g/cm³
• Molecular weight: 76.12 g/mol
• Melting point: 171-175℃
• Boiling point: 349 to 352°F (NTP, 1992)

CAS: 62-56-6
Product meets GB/8218-2018 standards:

Thiourea is an organic sulfur compound with the formula SC(NH2)2 and the structure H2N−C(=S)−NH2. Its structure is similar to urea (H2N−C(=O)−NH2), but oxygen atoms are replaced by sulfur atoms. The properties of urea and thiourea are very different. Thiourea is an organic synthesis reagent and a broad class of compounds with the formula SC(NHR)(NH2), SC(NHR)2, etc.

• 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 (about 13.7g/100 mL, 20°C); Ethanol: slightly soluble

• Acid-base: Weakly basic, can react with acids to form salts
• Reducibility: Can be oxidized by oxidants (hydrogen peroxide, potassium permanganate)
• Complexation: Forms complexes with metal ions (Ag+, Au+, Cu²+)
• Thermal stability: Decomposes when heated above melting point, producing ammonia and hydrogen sulfide
• Hydrolysis: Hydrolyzes under acidic/alkaline conditions to produce urea and hydrogen sulfide

• Weak acidity/reducing property: Aqueous solution is weakly acidic (pH≈6-7), minimal corrosiveness to common metals but may affect copper with long-term contact
• Reaction with oxidants: Mixing with strong oxidants may produce irritating gases (sulfur dioxide)

• Toxicity: Oral ingestion, inhalation or skin contact may pose health risks (potential carcinogen classified as IARC Group 3)
• Irritation: May irritate eyes, skin and respiratory tract, cause allergic reactions
• Environmental risk: Degradation may produce toxic sulfur compounds requiring professional waste treatment

• Wear gloves, goggles and dust masks during handling
• Ensure good ventilation, especially when heating or preparing solutions
• Store in sealed containers in cool, dry places away from oxidants and food

With over 20 years of experience in nitric acid production, Riel Chemical produces stable quality concentrated and dilute nitric acid products that exceed national standards, meeting requirements of high-end industries like rare earth and electronics.

Strict quality control ensures products exceed national excellent standards, with EU REACH certification for high-end applications. Committed to green manufacturing and environmental sustainability.

Complete industrial chain from nitric acid to potassium nitrate, magnesium nitrate and water-soluble fertilizers enhances production efficiency and market competitiveness, with ongoing expansion into high-purity nitrates and molten salt integration.

Established supply network with long-term partners, significant domestic market presence and exports to over 20 countries including Middle East, Western Europe, Southeast Asia and the US.

Energy-saving technologies reduce water, electricity and steam consumption through optimized process routes, implementing efficient low-consumption production with strong cleaner production capabilities.

We accept T/T and L/C at sight as payment terms.

Yes, we specialize in this product line with many years of experience, ensuring timely delivery while maintaining top quality.

Yes, we provide free samples with the customer responsible for express shipping fees.

Customer benefit is our top priority. Prices are negotiable based on order conditions, and we guarantee competitive pricing.

You are welcome to visit our facility in Weifang, China. We provide airport pickup/dropoff service at Weifang Airport.

Our professional after-sales team promptly addresses all quality concerns with efficient solutions.