Product Identification

Product Name

Hydroxylammonium sulfate

Synonyms

bis(Hydroxylammonium) sulfate
Oxyammonium sulfate

CAS

10039-54-0

Formula

H8N2O6S

Molecular Weight

164.14

EINECS

233-118-8

RTECS

NC5425000

RTECS Class

Mutagen

Merck

13,4853

Beilstein/Gmelin

114366 (G)

EC Index Number

612-123-00-2

EC Class

Harmful; Irritant; Sensitising; Dangerous for the Environment

Physical and Chemical Properties

Appearance

Colorless crystalline solid. Slightly hyroscopic.

Solubility in water

370

Melting Point

170

Density

1.10 g/cm3 (20 C)

Usage

Used as an easily-handled form of hydroxylamine, which is explosive when pure.

Vapor Density

N/R

First Aid Measures

Ingestion

If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.

Inhalation

Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration.

Skin

Get medical aid immediately. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse. Destroy contaminated shoes.

Eyes

Get medical aid immediately. Extensive irrigation is required (at least 30 minutes).

Handling and Storage

Storage

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Corrosives area.

Handling

Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Keep container tightly closed. Do not ingest or inhale. Discard contaminated shoes.

Hazards Identification

Inhalation

May cause methemoglobinemia, cyanosis, convulsions, tachycardia, dyspnea, and death. Irritation may lead to chemical pneumonitis and pulmonary edema. May cause severe irritation of the respiratory tract with sore throat, coughing, shortness of breath and delayed lung edema.

Skin

Causes skin irritation. May cause skin sensitization, an allergic reaction, which becomes evident upon re-exposure to this material. May cause skin burns.

Eyes

Causes eye irritation.

Ingestion

May cause severe gastrointestinal tract irritation with nausea, vomiting and possible burns. May cause methemoglobinemia, cyanosis, convulsions, and death.

Hazards

Contact with metals may evolve flammable hydrogen gas.

EC Risk Phrase

R 22 36/38 43 48/22 50

EC Safety Phrase

S 22 24 37 61

UN (DOT)

2865

Exposure Controls/Personal Protection

Personal Protection

Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.

Respirators

Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.

Exposure Effects

Absorption into the body leads to the formation of methemoglobin which in sufficient concentrations causes cyanosis.

Poison Class

3

Fire Fighting Measures

Fire Fighting

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Exposure to heat may promote violent decomposition. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire. Extinguishing media: Do NOT use water directly on fire. For small fires, use water spray, dry chemical, carbon dioxide or chemical foam. Cool containers with flooding quantities of water until well after fire is out.

Fire Potential

Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.

Accidental Release Measures

Small spills/leaks

Clean up spills immediately, using the appropriate protective equipment. Wear a self contained breathing apparatus and appropriate Personal protection. (See Exposure Controls, Personal Protection section). Sweep up, then place into a suitable container for disposal. Avoid generating dusty conditions. Provide ventilation.

Stability and Reactivity

Disposal Code

28

Incompatibilities

Bases, oxidizing agents, combustibles, and organic compounds.

Stability

Unstable at temperatures above 100C.

Decomposition

Nitrogen oxides, oxides of sulfur, ammonia and/or derivatives, nitrogen, sulfuric acid.

Combustion Products

Sulfuric acid fumes may form in fires.

Transport Information

UN Number

2865

Hazard Class

8

Packing Group

III

HS Code

2825 10 00