ICSC 1747 - HYDROXYLAMINE (50% aqueous solution)

HYDROXYLAMINE (50% aqueous solution)	ICSC: 1747 (November 2019)
Oxammonium

CAS #: 7803-49-8

UN #: 2735

EC Number: 232-259-2

	ACUTE HAZARDS	PREVENTION	FIRE FIGHTING
FIRE & EXPLOSION	Combustible. Gives off irritating or toxic fumes (or gases) in a fire. Risk of explosion on heating.	NO open flames.	Use water, 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: filter respirator for inorganic gases and vapours adapted to the airborne concentration of the substance. Do NOT let this chemical enter the environment. Collect leaking and spilled liquid in covered non-metallic containers as far as possible. Absorb remaining liquid in inert absorbent. Then store and dispose of according to local regulations.	According to UN GHS Criteria DANGER 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 UN Hazard Class: 8; UN Pack Group: III
STORAGE
Fireproof. Separated from incompatible materials. See Chemical Dangers. Cool. Well closed. Do not allow to dry out. 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 (50% aqueous solution)

ICSC: 1747

PHYSICAL & CHEMICAL INFORMATION
Physical State; Appearance COLOURLESS SOLUTION IN WATER. Physical dangers Chemical dangers Decomposes violently on heating. This generates explosion and toxic hazard. The substance is a weak base. 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. Attacks metals such as aluminium, copper, tin and zinc.	Formula: H₃NO / NH₂OH Molecular mass: 33.0 Boiling point: 107°C Melting point: 8°C Density (at 20°C): 1.12 g/cm³ Vapour pressure, kPa at 20°C: 1.4 Auto-ignition temperature: 215°C

PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
COLOURLESS SOLUTION IN WATER.

Physical dangers

Chemical dangers
Decomposes violently on heating. This generates explosion and toxic hazard. The substance is a weak base. 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. Attacks metals such as aluminium, copper, tin and zinc.

Formula: H₃NO / NH₂OH
Molecular mass: 33.0
Boiling point: 107°C
Melting point: 8°C
Density (at 20°C): 1.12 g/cm³
Vapour pressure, kPa at 20°C: 1.4
Auto-ignition temperature: 215°C

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.

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. See ICSC 661.

ADDITIONAL INFORMATION

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

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    See Also:
       Toxicological Abbreviations