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Thiourea

CAS Number
62-56-6
EC Number
200-543-5
Chemical Formula
CH4N2S
Molecular Weight
76.12 g/mol

Description

Thiourea (CAS 62-56-6 ) is an organosulfur compound used across chemical synthesis, surface treatment, and industrial processing as a reducing agent, complexing agent, and reaction intermediate. It functions as a catalyst precursor and auxiliary chemical in processes where controlled sulfur donation or metal ion sequestration is required for specific chemical transformations. In pharmaceutical manufacturing, this compound serves as a key intermediate in synthesizing active compounds, including certain antithyroid drugs and antimicrobial agents for medical use. The printing and packaging industry uses it in photographic fixing baths and toning solutions, where its metal-complexing behavior controls image development chemistry and stability. In textile and leather processing, it acts as a reducing agent for bleaching and surface preparation. It also functions as a catalyst precursor in hydrothermal synthesis routes. These routes are essential for sulfide-based nanomaterials and pigments. The product is supplied as a white crystalline powder or granules available in technical grade for industrial applications. Higher-purity grades are available meeting pharmaceutical or reagent specifications. Standard packaging ranges from small quantities for laboratory use to bulk industrial quantities. Purity is typically specified at 99% or above for most commercial grades. This ensures consistent performance across diverse manufacturing and laboratory environments worldwide. Contact us for supply of Thiourea Request Quote

Other Names (Synonyms)

thiocarbonic acid diamide | carbonothioic diamide | 2-thiourea | Sulfourea | Sulourea | 2-Thiopseudourea | Urea, thio- | Pseudourea, 2-thio- | (NH2)2CS.

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point176-178 °C
Boiling Point150-160 °C
Density1.405 g/cm³
AppearanceThiourea consists of colorless, lustrous crystals or powder with a bitter taste.
ColorWhite to almost white
OdorOdorless
FormCrystals
Water Solubility13.6 g/100 mL (20 ºC)
Refractive Index1.5300 (estimate)
pH6-8 (50g/l, H2O, 20℃)
Log P-1.050 (est)

Safety & Handling

Warning
GHS07· IrritantGHS08· Health HazardGHS09· Environment

Hazard Statements

H302Harmful if swallowed
H315Causes skin irritation
H317May cause an allergic skin reaction
H320Causes eye irritation
H335May cause respiratory irritation
H351Suspected of causing cancer
H361Suspected of damaging fertility or the unborn child
H372Causes damage to organs through prolonged or repeated exposure
H373May causes damage to organs through prolonged or repeated exposure
H401Toxic to aquatic life
H411Toxic to aquatic life with long lasting effects

Precautionary Statements

P203Obtain, consult and follow expert instructions for use.
P260Do not breathe dust/fume/gas/mist/vapours/spray.
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P264Wash … thoroughly after handling.
P270Do not eat, drink or smoke when using this product.
P271Use only outdoors or in a well-ventilated area.
P272Contaminated work clothing should not be allowed out of the workplace.
P273Avoid release to the environment.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P318IF exposed or concerned, get medical advice.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P330Rinse mouth.
P391Collect spillage.
P405Store locked up.
P501Dispose of contents/container in accordance with local regulations.
P265Wash … thoroughly after handling.
P317Get emergency medical help.
P352IF ON SKIN: Wash with plenty of water.
P340IF INHALED: Remove person to fresh air and keep comfortable for breathing.
P317Get emergency medical help.
P317Get emergency medical help.
P317If eye irritation persists: Get medical advice/attention. Get emergency medical help.
P364Take off contaminated clothing and wash it before reuse.
P233Store in a well-ventilated place. Keep container tightly closed.
P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Trade & Regulatory

HS Code29309070
UN Number2811
ADR Class6.1
Packing GroupIII
Storage Class11 - Combustible Solids
WGK (Germany)2