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NIOSH

AMMONIUM HYDROXIDE (10%-35% solution)

ICSC: 0215

Aqua ammonia
Ammonium hydrate
NH4OH
Molecular mass: 35.1
ICSC # 0215 		CAS # 1336-21-6
RTECS # BQ9625000
UN # 2672
EC # 007-001-01-2
March 17, 1995 Validated

TYPES OF HAZARD/ EXPOSURE

ACUTE HAZARDS/ SYMPTOMS

PREVENTION

FIRST AID/
FIRE FIGHTING

FIRE Not combustible.

In case of fire in the surroundings: use appropriate extinguishing media.
EXPLOSION See Notes.

In case of fire: keep drums, etc., cool by spraying with water.
EXPOSURE
STRICT HYGIENE!
IN ALL CASES CONSULT A DOCTOR!
•INHALATION Burning sensation. Cough. Laboured breathing. Shortness of breath. Sore throat.
Ventilation, local exhaust, or breathing protection. Keep containers properly closed.
Fresh air, rest. Artificial respiration if indicated. Refer for medical attention.
•SKIN Corrosive. Redness. Serious skin burns. Pain. Blisters.
Protective gloves. Protective clothing.
Remove contaminated clothes. Rinse skin with plenty of water or shower. Refer for medical attention.
•EYES Corrosive. Redness. Pain. Blurred vision. Severe deep burns.
Face shield or eye protection in combination with breathing protection.
First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
•INGESTION Corrosive. Abdominal cramps. Abdominal pain. Sore throat. Vomiting. (Further see Inhalation).
Do not eat, drink, or smoke during work.
Rinse mouth. Do NOT induce vomiting. Give plenty of water to drink. Refer for medical attention.

SPILLAGE DISPOSAL

STORAGE

PACKAGING & LABELLING

Evacuate danger area! Consult an expert in case of a large spillage! Ventilation. Cautiously neutralize spilled liquid with a dilute acid, such as dilute sulfuric acid. Wash away remainder with plenty of water. Do NOT let this chemical enter the environment. Personal protection: complete protective clothing including self-contained breathing apparatus.
Separated from food and feedstuffs . See Chemical Dangers. Cool. Well closed. Keep in a well-ventilated room (further see Notes).
Unbreakable packaging; put breakable packaging into closed unbreakable container.
Note: B
C symbol
N symbol
R: 34-50
S: 1/2-26-36/37/39-45-61
UN Hazard Class: 8
UN Packing Group: III
ICSC: 0215 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities (C) IPCS CEC 1994. No modifications to the International version have been made except to add the OSHA PELs, NIOSH RELs and NIOSH IDLH values.

AMMONIUM HYDROXIDE (10%-35% solution)

ICSC: 0215

I

M

P

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T

A

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D

A

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A

PHYSICAL STATE; APPEARANCE:
VERY VOLATILE, COLOURLESS SOLUTION OF AMMONIA IN WATER , WITH PUNGENT ODOUR.

PHYSICAL DANGERS:


CHEMICAL DANGERS:
Reacts with many heavy metals and their salts forming explosive compounds. Attacks many metals forming flammable/explosive gas (hydrogen - see ICSC 0001). The solution in water is a strong base, it reacts violently with acids.

OCCUPATIONAL EXPOSURE LIMITS:
TLV: (as NH3) 25 ppm as TWA; 40 ppm as STEL; (ACGIH 2004).
MAK: 20 ppm, 14 mg/m3;
Peak limitation category: I(2); Pregnancy risk group: C;
(DFG 2004).


ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation of its vapour or aerosol and by ingestion.

INHALATION RISK:
A harmful contamination of the air can be reached very quickly on evaporation of this substance at 20°C.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is corrosive to the eyes, the skin and the respiratory tract. Corrosive on ingestion as well. Inhalation of high concentrations of vapour may cause laryngeal oedema, inflamation of the respiratory tract, and pneumonia. The effects may be delayed.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Lungs may be affected by repeated or prolonged exposure to the vapour or aerosol.

PHYSICAL
PROPERTIES

Boiling point: (25%) 38°C
Melting point: (25%) -58°C
Relative density (water = 1): (25%) 0.9
Solubility in water:
miscible
Vapour pressure, kPa at 20°C: (25%) 48
Relative vapour density (air = 1): 0.6-1.2

ENVIRONMENTAL
DATA

The substance is very toxic to aquatic organisms.

N O T E S

Ammonia vapour is flammable and explosive under certain conditions. Be aware that ammonia gas can evolve from ammonia solution. Depending on the degree of exposure, periodic medical examination is suggested. Do NOT completely fill bottles with the substance; strong solutions may develop pressure. Release caps with care. Other UN numbers are: UN 1005 Ammonia, anhydrous liquefied or ammonia solutions, relative density of less than 0.880 at 15°C in water, with more than 50% ammonia; UN 2073 Ammonia, 35-50%. Also consult ICSC 0414 Ammonia. Card has been partly updated in October 2004. See sections Occupational Exposure Limits, EU classification, Emergency Response.
Transport Emergency Card: TEC (R)-80S2672

NFPA Code: H3; F1; R0

ADDITIONAL INFORMATION



ICSC: 0215 AMMONIUM HYDROXIDE (10%-35% solution)
(C) IPCS, CEC, 1994
IMPORTANT LEGAL NOTICE: Neither NIOSH, the CEC or the IPCS nor any person acting on behalf of NIOSH, the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use. The only modifications made to produce the U.S. version is inclusion of the OSHA PELs, NIOSH RELs and NIOSH IDLH values.
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