Ammonia, solution, with more than 35% but not more than 50% Ammonia

  • Aqua ammonia
  • Ammonium hydrate
  • Ammonia, aqueous solution
Formula
NH3.HOH
Structure
Description
Colorless to milky colored liquid, strong pungent odor of ammonia gas.
Uses
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.

Registry Numbers and Inventories.
CAS
1336-21-6
EC (EINECS/ELINCS)
215-647-6
EC Index Number
007-001-00-5
EC Class
Corrosive; Dangerous for the Environment
R 34 50
S 26 36/37/39 45 61
RTECS
BQ9625000
RTECS class
Mutagen; Human Data; Primary Irritant
UN (DOT)
3318
Merck
13,494
Beilstein/Gmelin
7477 (G)
EPA OPP
5301
Swiss Giftliste 1
G-7494
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
H5NO
Formula mass
35.04
Melting point, °C
-57.5
Boiling point, °C
36
Vapor pressure, mmHg
2160 (25 C)
Vapor density (air=1)
<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 Odor threshold 34 ppm
Density
0.89 g/cm3
Solubility in water
Miscible
pKa/pKb
4.74 (pKb)

Hazards and Protection.
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.
D1B E
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.
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.
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.
Stability
Stable under normal temperatures and pressures.
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.
Decomposition
Nitric oxide (NOx) and ammonia (NH3) fumes.

Fire.
Autoignition, °C
650
Upper exp. limit, %
33.6
Lower exp. limit, %
15.4
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.
Fire potential
Slightly flammable. NH3 fumes are flammable.
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.
Combustion products
Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Health
3
 
Flammability
0
 
 
Reactivity
0
 

Health.
Poison_Class
4
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.
   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.
   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.

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

Transport.
UN number
3318
Response guide
Hazard class
8
Packing Group
III
 
USCG CHRIS Code
AMH
 
HS Code
2814 20 00
 
IMO Chemical Code
17
IMO Pollution Category
C
IMO Hazard code
S/P