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Ammonium hydroxide

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[Autoignition]

650
[Fire Fighting]

Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes. Extinguishing media: For small fires, use water spray, dry chemical, carbon dioxide or chemical foam. Do NOT get water inside containers. For large fires, use dry chemical, carbon dioxide, alcohol-resistant foam, or water spray. Cool containers with flooding quantities of water until well after fire is out.
[Upper exp. limit]

33.6
[Lower exp. limit]

15.4
[Fire Potential]

Slightly flammable. NH3 fumes are flammable.
[Ingestion]

Do NOT induce vomiting. 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.
[Ingestion]

Harmful if swallowed. May cause severe and permanent damage to the digestive tract. Causes gastrointestinal tract burns. Causes throat constriction, vomiting, convulsions, and shock.
[Inhalation]

Effects may be delayed. Causes severe irritation of upper respiratory tract with coughing, burns, breathing difficulty, and possible coma.
[Inhalation]

Effects may be delayed. Causes severe irritation of upper respiratory tract with coughing, burns, breathing difficulty, and possible coma. Brief exposure to 5000 ppm can be fatal.
[Inhalation]

Get medical aid immediately. Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
[Skin]

Get medical aid immediately. Discard contaminated clothing in a manner which limits further exposure. Rinse area with large amounts of water for at least 15 minutes.
[Skin]

Causes severe skin irritation. Causes skin burns. May cause deep, penetrating ulcers of the skin. Contact with the skin may cause staining, inflammation, and thickening of the skin.
[Eyes]

Contact with liquid or vapor causes severe burns and possible irreversible eye damage.
[Eyes]

Get medical aid immediately. Do NOT allow victim to rub or keep eyes closed. Extensive irrigation is required (at least 30 minutes).
[Storage]

Do not store in direct sunlight. 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 only in a well ventilated area. Do not get in eyes, on skin, or on clothing. Keep container tightly closed. Do not ingest or inhale. Discard contaminated shoes.
[Inhalation]

Effects may be delayed. Causes severe irritation of upper respiratory tract with coughing, burns, breathing difficulty, and possible coma.
[Skin]

Causes severe skin irritation. Causes skin burns. May cause deep, penetrating ulcers of the skin. Contact with the skin may cause staining, inflammation, and thickening of the skin.
[Eyes]

Contact with liquid or vapor causes severe burns and possible irreversible eye damage.
[Ingestion]

Harmful if swallowed. May cause severe and permanent damage to the digestive tract. Causes gastrointestinal tract burns. Causes throat constriction, vomiting, convulsions, and shock.
[Hazards]

Some are oxidizers and may ignite combustibles (wood, paper, oil, clothing, etc.). Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated.
[EC Risk Phrase]

R 34 50
[EC Safety Phrase]

S 26 36/37/39 45 61
[UN (DOT)]

2073
[UN (DOT)]

2672
[UN (DOT)]

3318
[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]

Chronic ingestion may cause effects similar to those of acute ingestion. Prolonged or repeated exposure may cause corneal damage and the development of cataracts and glaucoma.
[Poison Class]

4
[Appearance]

Colorless to milky colored liquid, strong pungent odor of ammonia gas.
[Solubility in water]

Miscible
[Solubility in water]

Very soluble
[Melting Point]

-57.5
[Boiling Point]

36
[Vapor Pressure]

2160 (25 C)
[Vapor Pressure]

Varies
[Density]

0.89 g/cm3
[pKa/pKb]

4.74 (pKb)
[Usage]

Textiles, manufacture of rayon, rubber, condensation polymerization, pharmaceuticals, ceramics, photography (development of latent images), ammonia soaps, lubricants, fireproofing wood, ink mfr, ammonium compound, saponifying fats & oils, organic synth, detergent, household cleanser, food additive.
[Vapor Density]

<1
[Saturation Concentration]

148000 ppm (14.8%) (10% solution) at 20 C; 291500 ppm (29%) (19.1%) at 21.1 C; 732500 ppm (73.3%) (28.8%) at 21.1 C (calculated)
[Odor threshold]

34 ppm
[Product Name]

Ammonia solution
[Synonyms]

Ammonia, aqueous solution
Ammonium hydrate
Ammonium hydroxide
Aqua ammonia
Azanium hydroxide
[CAS]

"CASEN_1336-21-6.htm">1336-21-6
[Formula]

H5NO
[Molecular Weight]

35.04
[EINECS]

215-647-6
[RTECS]

BQ9625000
[RTECS Class]

Mutagen; Human Data; Primary Irritant
[Merck]

13,494
[Beilstein/Gmelin]

7477 (G)
[EC Index Number]

007-001-00-5
[EC Class]

Corrosive; Dangerous for the Environment
[Small spills/leaks]

Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Neutralize spill with a weak acid such as vinegar or acetic acid. Avoid runoff into storm sewers and ditches which lead to waterways. Clean up spills immediately, using the appropriate protective equipment. Provide ventilation.
[Incompatibilities]

Acrolein, acrylic acid, chlorosulfonic acid, dimethyl sulfate, fluorine, gold + aqua regia, hydrochloric acid, hydrofluoric acid, iodine, nitric acid, oleum, propiolactone, propylene oxide, silver nitrate, silver oxide, silver oxide + ethyl alcohol, nitromethane, silver permanganate, sulfuric acid, halogens. Forms explosive compounds with many heavy metals and halide salts.
[Stability]

Stable under normal temperatures and pressures.
[Decomposition]

Nitric oxide (NOx) and ammonia (NH3) fumes.
[Combustion Products]

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

2073
[UN Number]

2672
[UN Number]

3318
[Hazard Class]

8
[Packing Group]

III
[HS Code]

2814 20 00