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Cysteamine hydrochloride

CAS Number
156-57-0
EC Number
205-858-1
Chemical Formula
C2H7NS.ClH
Molecular Weight
113.61 g/mol

Description

Cysteamine hydrochloride (CAS 156-57-0 ), also sold as mercaptamine hydrochloride or cysteamine HCl, is a stable salt form of the aminothiol cysteamine used across pharmaceutical, agricultural, and industrial processing applications. Its thiol and amine functional groups make it a reactive intermediate and active agent in synthesis, formulation, and surface treatment processes. In pharmaceuticals, it serves as a key intermediate in the synthesis of active ingredients. It is the basis for cystinosis treatment formulations, making it a high-value procurement target for API manufacturers. Textile and leather processors use it as a reducing agent in wool and hair fiber treatments. This enables controlled disulfide bond cleavage for permanent waving, softening, and depilation products. In agriculture and animal feed, it functions as a growth-promoting additive and antioxidant stabilizer in premix formulations. Food manufacturers source it as a flavoring agent and dough conditioner, where its reducing action on gluten disulfide bonds improves dough extensibility in baked goods. It is supplied as a white crystalline powder. Standard commercial grades include pharmaceutical-grade material meeting USP and BP specifications, as well as technical-grade product for industrial and agricultural use. Packaging typically ranges from kilogram quantities up to bulk drum supply depending on application requirements. This ensures flexibility for both small-scale laboratory use and large-scale industrial manufacturing. Contact us for supply of Cysteamine hydrochloride Request Quote

Other Names (Synonyms)

2-Aminoethanethiol hydrochloride | Cysteamine HCl | Mercaptamine hydrochloride | Cysteaminium chloride | Bekaptan | ETHANETHIOL, 2-AMINO-, HYDROCHLORIDE | Mercaptoethylamine hydrochloride | Merkamin hydrochloride

Key Technical Features

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

Physical Properties

Melting Point70.2-70.7 °C
Boiling Point238.5°C[at 101 325 Pa]
Density0.75
AppearanceWhite Solid
ColorWhite
FormCrystalline Powder or Pellets
Water SolubilityVERY SOLUBLE
Vapor Pressure5.333Pa at 25℃
Refractive Index1.6100 (estimate)
pH3.3-5.0 (400g/l, H2O, 20℃)
Log P-2.14 at 25℃

Safety & Handling

Warning
GHS07· Irritant

Hazard Statements

H302Harmful if swallowed
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary Statements

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.
P280Wear protective gloves/protective clothing/eye protection/face protection.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P330Rinse mouth.
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.
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 Number3335
Storage Class11 - Combustible Solids
WGK (Germany)3