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HYDROXYLAMINEICSC: 0661
OxammoniumNovember 2019
CAS #: 7803-49-8
EC Number: 232-259-2

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Gives off irritating or toxic fumes (or gases) in a fire.  Risk of explosion on heating. Risk of fire and explosion on contact with many substances. See Chemical Dangers.  NO open flames, NO sparks and NO smoking. NO contact with hot surfaces.    Use water in large amounts, alcohol-resistant foam, powder.  In case of fire: keep drums, etc., cool by spraying with water. Combat fire from a sheltered position. 

 AVOID ALL CONTACT! IN ALL CASES CONSULT A DOCTOR! 
  SYMPTOMS PREVENTION FIRST AID
Inhalation Cough. Sore throat. Dizziness. Headache. Blue lips, fingernails and skin. Shortness of breath. Weakness.  Use ventilation, local exhaust or breathing protection.  Fresh air, rest. Administration of oxygen may be needed. Refer immediately for medical attention. See Notes. 
Skin MAY BE ABSORBED! Redness. Pain. Further see Inhalation.  Protective gloves. Protective clothing.  Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer immediately for medical attention . 
Eyes Redness. Pain. Severe burns.  Wear face shield or eye protection in combination with breathing protection.  Rinse with plenty of water for several minutes (remove contact lenses if easily possible). Refer immediately for medical attention. 
Ingestion Nausea. Vomiting. Symptoms may be delayed. Further see Inhalation.  Do not eat, drink, or smoke during work.  Rinse mouth. Administration of oxygen may be needed. Refer immediately for medical attention. See Notes. 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Sweep spilled substance into covered non-metallic containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

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DANGER
Unstable explosive
May be corrosive to metals
Harmful if swallowed or in contact with skin
Causes skin irritation
Causes serious eye damage
May cause an allergic skin reaction
Suspected of causing cancer
May cause respiratory irritation
May cause damage to blood
May cause damage to blood through prolonged or repeated exposure
Very toxic to aquatic life 

Transportation
UN Classification
 

STORAGE
Fireproof. Separated from incompatible materials. See Chemical Dangers. Cool. Dry. Well closed. Store in an area without drain or sewer access. Provision to contain effluent from fire extinguishing. 
PACKAGING
Do not transport with food and feedstuffs.
Marine pollutant. 
HYDROXYLAMINE ICSC: 0661
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
VERY HYGROSCOPIC WHITE NEEDLES OR FLAKES. 

Physical dangers
 

Chemical dangers
May explode on heating above 70°C or when exposed to open flame. Decomposes rapidly at room temperature, especially in the presence of moisture and carbon dioxide, and violently on heating. This produces toxic fumes including nitrogen oxides. Reacts violently with oxidants, metals such as finely divided zinc, some metal oxides, copper(II)sulfate and phosphorus chlorides. This generates fire and explosion hazard. 

Formula: H3NO / NH2OH
Molecular mass: 33.0
Decomposes at <70°C
Melting point: 33°C
Density: 1.2 g/cm³
Solubility in water at 20°C: freely soluble
Vapour pressure, kPa at 47°C: 1.3
Relative vapour density (air = 1): 1.1
Relative density of the vapour/air-mixture at 20°C (air = 1): 1.00
Flash point: explodes at 129°C
Octanol/water partition coefficient as log Pow: -1.5  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation, through the skin and by ingestion. 

Effects of short-term exposure
The substance is corrosive to the eyes. The substance is irritating to the skin and respiratory tract. The substance may cause effects on the blood. This may result in the formation of methaemoglobin. The effects may be delayed. Medical observation is indicated. 

Inhalation risk
No indication can be given about the rate at which a harmful concentration of this substance in the air is reached on evaporation at 20°C. 

Effects of long-term or repeated exposure
Repeated or prolonged contact may cause skin sensitization. The substance may have effects on the blood. This may result in the formation of methaemoglobin and consequent anaemia. Tumours have been detected in experimental animals but may not be relevant to humans. 


OCCUPATIONAL EXPOSURE LIMITS
MAK sensitization of skin (SH) 

ENVIRONMENT
The substance is very toxic to aquatic organisms. 

NOTES
Do NOT take working clothes home.
Depending on the degree of exposure, periodic medical examination is suggested.
Specific treatment is necessary in case of poisoning with this substance; the appropriate means with instructions must be available.
Decomposition during storage may cause a build-up of pressure in the container.
This substance is usually commercially available as a solution.
See ICSC 1747.
See also ICSC 0709. 

ADDITIONAL INFORMATION
  EC Classification
H200; H290; H302; H312; H315; H318; H317; H335; H351; H373; H400 

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