Anhydrous Ammonia
Anhydrous ammonia is a pungent, colourless and non-flammable liquefied
gas. Its vapour is lighter than air and liquid is lighter than water. Anhydrous ammonia
boils at -33.33°C and freezes to a white
crystalline mass at -77.78°C. It ignites at a temperature of 651.1°C within vapour
concentration limits between 15% and 28%.
Ammonia has great affinity for water and reacts with galvanized metals, cast iron, copper, brass or
copper alloys.
Anhydrous ammonia is used in: Refrigeration Applications, Metal Treating, Chemical, Pharmaceutical,
Petroleum Industries, Agriculture (fertilizers), Explosives.
Specification :
| |
Sl. No |
Characteristics |
GIII |
GII |
GI |
| |
1 |
Ammonia in %, Min |
99.5 |
99.9 |
99.95 |
| |
2 |
Residue on Evaporation ,% by mass, Max |
0.5 |
0.5 |
0.05 |
| |
3 |
Moisture % by mass, Max |
0.5 |
0.1 |
0.05 |
| |
4 |
Oil, ppm by mass Max |
10.0 |
5 |
2 |
|
Ammonia in aqueous solution (Ammonium Hydroxide)
When ammonia gas is dissolved in water, the resulting material is
ammonium hydroxide or "aqua" ammonia. It is a clear, colourless liquid having a strong
pungent ammonia odour.
Aqua ammonia (ammonium hydroxide) is classified as a weak base. It ionizes much less completely in
water than does a strong base such as sodium hydroxide. Its viscosity is higher than that for liquid
anhydrous ammonia.
Aqua ammonia reacts with many organic and inorganic acids to form ammonium salts and compounds; with
certain metals to form complex ion salts; with halogens to form haloamines; and under extreme
circumstances with silver and mercury to form explosive azides.
Aqua ammonia is used as the nitrogen source for fertilizer. It is also used in the making of
refrigerants and home and commercial cleaning products.
Aqua ammonia is corrosive to copper, silver, aluminium, zinc, and alloys. It reacts with body
moisture, Hence it may burn body tissue - skin, eyes, mouth, throat, lungs, and stomach - on contact,
if inhaled or swallowed.
Aqua ammonia is generally tolerable at concentrations up to 25 parts-per-million (ppm), even though
the smell is unpleasant and sharp. Above this concentration, irritation of the eyes, nose, and throat
may begin. Above 400 ppm, skin irritation and coughing occur immediately.
Ammonia in aqueous solution is not flammable or explosive. However, it poses a danger when it is
exposed to fire or elevated temperatures as it may decompose, releasing flammable and toxic gases.
Ammonia in aqueous solution (Ammonium hydroxide) of Analytical, Synthesis, Technical and Commercial
grades are available in tank cars, drums and carboys.
Specification :
| |
Sl. No |
Characteristics |
Analytical |
Technical |
Synthesis |
Commercial |
| |
1 |
NH3, % by mass, Min. |
25 |
20 |
1- 30 |
1- 30 |
| |
2 |
Residue on evaporation % by mass max |
0.002 |
0.1 |
0.15 |
0.2 |
|
Our Anhydrous Ammonia and Ammonia in aqueous solution storage facility help us to provide uninterrupted
supply of Ammonia to the customers.
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