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Ammonia

Ammonia

CAS Number: 7664-41-7

Molecular Formula: H3N

Compressed GasCompressed Gas
CorrosiveCorrosive
Acute ToxicAcute Toxic
Environmental HazardEnvironmental Hazard
UN Number (Anhydrous): UN 1005

About Ammonia

Ammonia (CAS No: 7664-41-7)- one of the most fundamental and abundant nitrogen compounds on Earth- vital inorganic gas and chemical building block that holds a critical position in the advanced materials and semiconductor manufacturing industries, primarily valued for its role as an ultra-pure precursor in CVD processe...

Synonyms

  • Spirit of hartshorn
  • Nitrogen
  • Ammonia solution
  • Ammonia water
  • ammonium hydroxide
View all

Ammonia Specifications

CAS Number
7664-41-7
Molecular Formula
H3N
Molecular Weight
17.03
IUPAC Name
azane
Canonical SMILES
N
InChI Key
QGZKDVFQNNGYKY-UHFFFAOYSA-N
InChI
InChI=1S/H3N/h1H3
UNII Code
5138Q19F1X
ChEBI ID
CHEBI:16134
HMDB ID
HMDB0000051
DSSTox Substance ID
DTXSID0023872
EINECS Number
231-635-3
FEMA Number
4494
UN Number
2073
MDL Number
MFCD00011418
HSN No
28141000 (anhydrous ammonia) and 28142000 (aqueous solution)
Molecular Weight
17.03
Melting Point (Experimental)
-77.7 °C
Boiling Point (Experimental)
-33.35 °C
Density (Experimental)
0.7 g/cm³ Temp: -33 °C
pKa (Experimental)
28
LogP
log Kow = -2.66 /estimate for ammonium hydroxide which is the form of ammonia in water/
Solubility
34%
GHS Hazard Statements
H221: Flammable gas H314: Causes severe skin burns and eye damage H331: Toxic if inhaled H400: Very toxic to aquatic life
Hazard Classes and Categories
Flammable gases (including chemically unstable gases) - Category 1 Gases under pressure - Liquefied gas Acute toxicity (Inhalation: Gases) - Category 4 Skin corrosion/irritation - Category 1A-1C Serious eye damage/eye irritation - Category 1 Respiratory sensitization - Category 1 Germ cell mutagenicity - Category 2 Specific target organ toxicity - Single exposure - Category 1 (respiratory system) Specific target organ toxicity - Repeated exposure - Category 2 (lung) Hazardous to the aquatic environment (Acute) - Category 1 Hazardous to the aquatic environment (Long-term) - Category 1
Incompatible on ammonia storage
Copper, brass, bronze, zinc, and galvanized surfaces are strictly prohibited due to severe corrosive amine complex formation
Regulatory storage mandates
Facilities must comply with rigid safety guidelines, including OSHA 29 CFR 1910.111 storage regulations and safety relief valve configurations

Semiconductor Fabrication

Ultra-pure nitrogen precursor gas used in Chemical Vapor Deposition (CVD) to grow thin-film silicon nitride (Si3N4) passivation and insulation layers

Advanced Materials & Electronics

High-purity reactive gas applied in molecular beam epitaxy (MBE) and metalorganic chemical vapor deposition (MOCVD) to synthesize Gallium Nitride (GaN) and Aluminum Nitride (AlN) crystal substrates for LEDs, 5G RF power amplifiers, and next-generation power electronics

.Green Energy & Hydrogen Transport

Zero-carbon chemical carrier molecule utilised to store and transport high-density hydrogen globally, which is cracked back into clean hydrogen gas at the point of consumption

Industrial & Eco-Friendly Refrigeration

High-efficiency, zero-GWP (Global Warming Potential) and zero-ODP (Ozone Depletion Potential) natural refrigerant (designated as R-717) utilised in large-scale cold chain logistics, food processing facilities, and district cooling systems

NOx Emissions Abatement (SCR)

Reducing agent used in Selective Catalytic Reduction (SCR) systems at power plants, maritime vessels, and heavy manufacturing facilities to neutralise toxic nitrogen oxides (NOx) into harmless nitrogen gas and water vapour

Agricultural Fertilizer Production

Fundamental base feedstock for the Haber-Bosch synthesis of nitrogenous fertilisers, including urea, ammonium nitrate, and diammonium phosphate (DAP), supporting global crop production

Metallurgical Heat Treating

Controlled atmosphere gas used in metal processing for nitriding, carbo-nitriding, and furnace brazing to case-harden engineered steel components, automotive gears, and aerospace alloys

Chemical Synthesis & Intermediates

Primary molecular block utilised to manufacture essential intermediate chemicals such as nitric acid, caprolactam (for nylon), acrylonitrile (for plastics), and pharmaceutical APIs

  1. Spirit of hartshorn
  2. Nitrogen
  3. Ammonia solution
  4. Ammonia water
  5. ammonium hydroxide

Ammonia FAQs

Minimum Order Quantity

25 kg (evaluation) · 1 MT (commercial)

Lead Time

3 – 5 weeks estimated

Delivery Terms

FOB*

Packaging

20 L pails, 200 L HDPE drums, 1000 L IBC

US Availability

US Facility Inventory

Documentation

US SDS · COA · TDS · Specification sheet

US Regulatory & Quality Information

TSCA status*

US SDS / HazCom*

GHS classification*

ISO 9001:2015 site*

DOT shipping classification*

FDA status*

EPA status*

California Prop 65*

Reliable US supply chain

Regulatory compliance

On-time delivery

Technical expert support

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