Hydroxylamine sulfate Property

Melting point:

170 °C (dec.)(lit.)

Boiling point:

56.5℃

Density 

1.86

vapor pressure 

0.001Pa at 20℃

storage temp. 

-20°C

solubility 

water: soluble(lit.)

form 

Crystals

color 

White

PH

3.6 (10g/l, H2O, 20℃)

Water Solubility 

329 g/L (20 ºC)

Sensitive 

Hygroscopic

Merck 

14,4828

Stability:

Stable, but may be an explosion hazard - do not heat. May decompose explosively in the presence of alkalies. Air sensitive. Hygroscopic. Incompatible with copper, copper alloys, strong oxidising agents, strong bases, nitrites.

LogP

-1.031 (est)

CAS DataBase Reference

10039-54-0(CAS DataBase Reference)

EPA Substance Registry System

Hydroxylamine sulfate (2:1) (10039-54-0)

Safety

Hazard Codes 

Xn,N,E

Risk Statements 

22-36/38-43-48/22-50-40-21/22-2

Safety Statements 

22-24-37-61-36/37

RIDADR 

UN 2865 8/PG 3

WGK Germany 

3

RTECS 

NC5425000

F 

21

TSCA 

Yes

HazardClass 

8

PackingGroup 

III

HS Code 

28251000

Toxicity

LD50 orally in Rabbit: 842 mg/kg LD50 dermal Rabbit 1500 - 2000 mg/kg

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H290May be corrosive to metals

H315Causes skin irritation

H317May cause an allergic skin reaction

H319Causes serious eye irritation

H351Suspected of causing cancer

H373May cause damage to organs through prolonged or repeated exposure

H400Very toxic to aquatic life

Precautionary statements

P273Avoid release to the environment.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P301+P312IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P308+P313IF exposed or concerned: Get medical advice/attention.

Hydroxylamine sulfate Chemical Properties,Usage,Production

Chemical Properties

Also hydroxylammonium sulfate, or HS, (NH2OH)2·H2S04 is colorless crystals that are soluble in water and slightly soluble in alcohol. The solution has a corrosive action on the skin. Used as a reducing agent, photographic developer, purification agent for aldehydes and ketones, chemical synthesis, textile chemical, oxidation inhibitor for fatty acids, catalyst, in biological and biochemical research, for making oximes for paints and varnishes, and rustproofing.

Physical properties

Colorless, crystalline solid; melts at 177°C (decomposes); very soluble in386 HYDROXYLAMINE HYDROCHLORIDE / HYDROXYLAMINE SULFATEpp-03-25-new dots.qxd 10/23/02 2:38 PM Page 386 water; slightly soluble in alcohol.

Uses

Hydroxylammonium sulfate is a reducing agent in photography; catalyst, swelling agent, and copolymerization inhibitor in polymerization processes; in chemical synthesis; as a textile chemieal; as an oxidation inhibitor; in making oximes for paints and varnishes; in rustproofing; in nondiscoloring short -stoppers for synthetic rubbers; for unhairing hides; in biological and biochemical research; as a purification agent for aldehydes and ketones; converts aldehydes and ketones to oximes and acid chlorides to hydroxamic acids.

Uses

Hydroxylamine sulfate may be used to prepare highly sensitive cellulose tape, used for the detection of formaldehyde gas. It may be used in the quantitative determination of perchlorate in biological fluids by spectrophotometric methods .

Uses

As reducing agent in photography; in synthetic and analytical chemistry; to purify aldehydes and ketones. As antioxidant for fatty acids and soaps. As dehairing agent for hides.

Uses

Used as to purify aldehydes and ketones; reagent for mercury and silver detection in water; reducing agent.

Preparation

Hydroxylamine sulfate may be prepared by mixing stoichiometric amountsof hydroxylamine and sulfuric acid. It also may be prepared by electrolytical-ly reducing an aqueous solution of ammonium sulfate.

General Description

Colorless crystalline solid. Contact may cause severe irritation to skin, eyes, and mucous membranes. May be toxic by ingestion.

Air & Water Reactions

Water soluble.

Reactivity Profile

Sulfuric acid fumes may form in fires [USCG, 1999]. Solid Hydroxylamine sulfate explodes when heated to 170°C., [Chem. Process 26:30(1963)]. Sodium ignites on contact with hydroxylamine. (Mellor, 1940, Vol. 8, 292.)

Hazard

Irritant to tissue.

Health Hazard

Inhalation of dust or ingestion may cause systemic poisoning characterized by cyanosis, methemoglobinemia, convulsions, and coma. Contact with eyes or skin causes irritation.

Fire Hazard

Special Hazards of Combustion Products: Sulfuric acid fumes may form in fires.

Flammability and Explosibility

Non flammable

Safety Profile

Poison by skin contact and intraperitoneal routes. Mutation data reported. A corrosive irritant to skin, eyes, and mucous membranes. Moderately explosive when exposed to heat or by chemical reaction. In the presence of alkalies at elevated temperatures, free hydroxylamine is liberated and may decompose explosively. When heated to decomposition it emits toxic fumes of SOx and NOx. See also AMINES and SULFATES.

Purification Methods

Crystallise it from boiling water (1.6mL/g) by cooling to 0o.