Ammonium Hydroxide

Hazard statements (CLP)

H280, H314, H335, H400

Code

Statements

H280

Contains gas under pressure; may explode if heated

2.1 Classification of the substance or mixture

Category CM-A/058 Skin corrosion / Irritation 1B 0 Specific target organ toxicity (single exposure) 3 Acute hazards to the aquatic Environment 1

2.2 Label elements

Corrosive Irritant Environment

Signal word

DANGER

Hazard statements

H314: Causes severe skin burns and eye damage H280: Contains gas under pressure; may explode if heated H335: May cause respiratory irritation H400: Very toxic to aquatic life

Prevention

P260: Do not breathe dust / fume / gas / mist / vapours / spray P273: Avoid release to the environment P280: Wear protective gloves / protective clothing / eye protection / face protection

Response

P301+330+331 IF SWALLOWED Rinse mouth. Do NOT induce vomiting P305+351+338 IF IN EYES Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing P303+361+353 IF ON SKIN (or hair) Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower Revision Date: 15 Sep 2012 Revision : 0 Re-revision Date: 14 Sep 2017 - 1 - P310: Immediately call a POISON CENTER or doctor/physician.

Storage

P410+403: Protect from sunlight. Store in a well ventilated place

Disposal

P501: Dispose of contents/containers in accordance with all applicable environmental regulation.

Other hazards which do not result in classification

Primary Hazard Ammonium hydroxide is an alkaline material and reacts corrosively with humans’ tissue in varying degrees depending on concentration and the time duration of the exposure. Ammonia Vapors from aqua ammonia can be suffocating and irritating to mucous membranes and lung tissue. Skin contact can cause severe irritation and burns. Eye contact with aqua ammonia may be severely irritating; ammonia contact with eyes may be mildly irritating. Ingestion can cause vomiting, nausea and corrosive burns to the esophagus and stomach. Specific Hazards Ammonium hydroxide may react with halogens such as bromine and chlorine with silver or with hypochlorites to form explosive and/or toxic compounds. Ammonia vapor begins to dissociate into nitrogen and highly flammable hydrogen at about 840 °F if a suitable catalyst is present. Iron pipe is one such catalyst. Ammonium hydroxide will react with many organic and I norganic acids to form salts. These reactions are usually exothermic, i.e., heat is generated.