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Hydroxylamine

CAS Number
7803-49-8
EC Number
232-259-2
Chemical Formula
H3NO
Molecular Weight
33.030 g/mol

Description

Hydroxylamine (CAS 7803-49-8 ), also known as azanol, is an inorganic amine used industrially as a reducing agent, oxime-forming reagent, and pH buffer across chemical manufacturing. It is commercially available primarily as aqueous solutions or as its stable salt forms, hydroxylamine hydrochloride and hydroxylamine sulfate. In pharmaceutical synthesis, it is a critical intermediate. This chemical is essential for producing oximes, caprolactam, and active pharmaceutical ingredients where selective nitrogen functionalization is required. Agrochemical manufacturers use it in the synthesis of herbicides. It is also utilized in fungicides and other crop protection compounds. In textile and paper processing, it functions as a reducing agent to strip dyes and control oxidative degradation during bleaching. Rubber producers apply it as a stabilizer and vulcanization auxiliary, where it moderates cure rates in specialty elastomer formulations. It is supplied as stabilized aqueous solutions, typically at 50% concentration. Solid salt forms include hydroxylamine hydrochloride and hydroxylamine sulfate. Technical and reagent grades are the most commonly stocked, with pharmaceutical-grade material available to meet USP standards. The material also meets Ph. Eur. specifications for high-purity applications. Packaging ranges from drums to IBC totes depending on the specific grade and concentration required for your facility. Contact us for supply of Hydroxylamine Request Quote

Other Names (Synonyms)

nitrinous acid | azanol | aminol | NH2OH | azinous acid | 2FP81O2L9Z | RefChem:5894

Key Technical Features

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

Physical Properties

Melting Point33 °C
Boiling Point70 °C @ Press: 60 Torr
Density1.227 g/cm³
Appearanceslightly yellow liquid
Colorwhite orthorhombic flakes or needles
Formwhite flakes or needles
Water SolubilityMiscible with water, liquid ammonia and methanol. Slightly miscible with ether, benzene, carbon disulfide and chloroform.
Vapor Pressure9 mm Hg ( 40 °C)
Refractive Indexn 20/D 1.393
pH10.6 (20°C in H2O)

Safety & Handling

Danger
GHS01· ExplosiveGHS05· CorrosiveGHS07· IrritantGHS08· Health HazardGHS09· Environment

Hazard Statements

H200Unstable Explosive
H290May be corrosive to metals
H302Harmful if swallowed
H312Harmful in contact with skin
H315Causes skin irritation
H317May cause an allergic skin reaction
H318Causes serious eye damage
H335May cause respiratory irritation
H351Suspected of causing cancer
H371May cause damage to organs
H372Causes damage to organs through prolonged or repeated exposure
H373May causes damage to organs through prolonged or repeated exposure
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H412Harmful to aquatic life with long lasting effects H302+
H312Harmful if swallowed or in contact with skin

Precautionary Statements

P201Obtain special instructions before use.
P202Do not handle until all safety precautions have been read and understood.
P203Obtain, consult and follow expert instructions for use.
P234Keep only in original packaging.
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.
P281Use personal protective equipment as required.
P317Get emergency medical help.
P318IF exposed or concerned, get medical advice.
P319Get medical advice/attention if you feel unwell.
P321Specific treatment (see … on this label).
P330Rinse mouth.
P372Explosion risk.
P373DO NOT fight fire when fire reaches explosives.
P380Evacuate area.
P390Absorb spillage to prevent material damage.
P391Collect spillage.
P401Store in accordance with … .
P405Store locked up.
P406Store in a corrosion-resistant/… container with a resistant inner liner.
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.
P316Get emergency medical help immediately.
P317Get emergency medical help.
P317Get 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 Code28251090
UN Number3082
ADR Class9
Packing GroupIII
Storage Class3 - Flammable liquids
WGK (Germany)3