What is the CAS number of thiourea?

Thiourea (thiocarbamide) has CAS number 62-56-6, molecular formula (NH2)2CS and molecular weight 76.12.

Is thiourea the same as thiourea dioxide?

No. Thiourea (CAS 62-56-6) is a chemical intermediate. Thiourea dioxide (CAS 1758-73-2), also called FAS, is a reducing agent used in dyeing and bleaching. They are different products; Yantai Dasteck Chemicals manufactures both.

What are the main uses of thiourea?

Thiourea is used as a pharmaceutical intermediate, a rubber vulcanization accelerator, a mining flotation agent, a textile and paper treating agent, a dyeing and printing auxiliary, and in petrochemicals, metallurgy, electroplating and agrochemicals.

Thiourea (Thiocarbamide) CAS 62-56-6 — Manufacturer & Supplier

Name: Thiourea
Brand: Dasteck

Thiourea white lustrous crystals 98.5% min — Yantai Dasteck Chemicals

Thiourea 硫脲

White lustrous crystals — intermediate for pharmaceuticals, rubber accelerators, mining flotation, textiles, dyes and electroplating.

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Yantai Dasteck Chemicals supplies thiourea with stable quality backed by decades of manufacturing experience. Every batch is tested before release and fully traceable.

Product Identification

Product Name	Thiourea
Synonyms	Thiocarbamide; Sulfourea
CAS No.	62-56-6
Molecular Formula	(NH₂)₂CS
Molecular Weight	76.12

Physical Properties

Appearance	White lustrous crystals
Taste	Bitter
Relative Density	1.406
Melting Point	170–172°C
Solubility	Soluble in water and ethanol; readily soluble in hot water; insoluble in ethyl ether
Flammability	Combustible

Quality Specification

Item	Standard
Thiourea content	≥ 98.5%
Loss on heating	≤ 0.50%
Ash	≤ 0.15%
Water-insoluble matter	≤ 0.05%
Thiocyanate (as CNS)	≤ 0.05%
Melting point	≥ 170°C

Applications

Pharmaceuticals — intermediate for the manufacture of drugs.
Rubber industry — vulcanization accelerator.
Mining — flotation agent.
Textiles & paper — treating agent and dyeing/printing auxiliary.
Petrochemicals — additive.
Metallurgy & electroplating — process auxiliary.
Agrochemicals — intermediate.

Packing

25 kg net weight per plastic woven bag, or as required by the customer.

Frequently Asked Questions

Is thiourea the same as thiourea dioxide? No — different chemicals with different CAS numbers (62-56-6 vs 1758-73-2) and different uses. Thiourea dioxide is the reducing agent: see Thiourea Dioxide.
Do you supply pharmaceutical-grade thiourea? Our standard grade is ≥ 98.5% (industrial). For special purity requirements, contact us with your specification.

Need a COA, SDS or a sample? Contact us — we reply within one working day.

Thiourea (Thiocarbamide)

Thiourea 硫脲

Product Identification

Physical Properties

Quality Specification

Applications

Packing

Frequently Asked Questions

Related Products

Thiourea Dioxide (TDO / FAS)

Dicyandiamide

Dasteck Chemicals

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