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294993

Ammonia

anhydrous, ≥99.98%

Sustainability features

Synonym(s):

Ammonia gas

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About This Item

Linear Formula:
NH3
CAS Number:
7664-41-7
Molecular Weight:
17.03
UNSPSC Code:
12142100
NACRES:
NA.22
PubChem Substance ID:
24857750
EC Number:
231-635-3
Beilstein/REAXYS Number:
3587154
MDL number:
MFCD00011418
Assay:
≥99.98%
Form:
liquefied gas
Grade:
anhydrous
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grade

anhydrous

Quality Segment

vapor density

0.6 (vs air)

vapor pressure

8.75 atm ( 21 °C)

assay

≥99.98%

form

liquefied gas

autoignition temp.

1203 °F

expl. lim.

25 %

greener alternative product characteristics

Design for Energy Efficiency
Learn more about the Principles of Green Chemistry.

sustainability

Greener Alternative Product, Sustainability features

pH

~10-12 (20 °C, 50 g/L)

pKa (25 °C)

9.25

bp

−33 °C (lit.)

mp

−78 °C (lit.)

solubility

water: 531 g/L at 20 °C

density

0.7 g/cm3 at -33 °C

greener alternative category

,

SMILES string

N

InChI

1S/H3N/h1H3

InChI key

QGZKDVFQNNGYKY-UHFFFAOYSA-N

General description

We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for energy efficiency. Find details here.

Application

Ammonia may be used as a base to adjust pH for preparing mixed magnetite-hematite nanoparticles via combustion method. These nanoparticles show promising potential as sorbents for removing heavy metal ions from water.
Reagent for chemical vapor deposition of TiN.
Anhydrous ammonia has been used in dynamic reaction cell technology (DRC) to remove interfering ions without the loss of sensitivity. It has also been used for adjusting pH during the synthesis of magnetite-hematite mixture by combustion methods.

Packaging

Supplied in a carbon steel lecture bottle with a CGA180M/CGA110F needle valve installed.

Compatible with the following:
  • Aldrich® lecture-bottle station systems
  • Aldrich® lecture-bottle gas regulators

Other Notes

See Technical Information Bulletin AL-151 Gas Regulators: Selection, Installation, and Operation

Legal Information

Aldrich is a registered trademark of Sigma-Aldrich Co. LLC

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Signal Word

Danger

Hazard Classifications

Acute Tox. 3 Inhalation - Aquatic Acute 1 - Aquatic Chronic 2 - Eye Dam. 1 - Flam. Gas 2 - Press. Gas Liquefied gas - Skin Corr. 1B

supp_hazards

EUH071

Storage Class

2A - Gases

WGK

WGK 2

Flash Point (°F)

Not applicable

Flash Point (°C)

Not applicable

PPE (personal protective equipment)

Faceshields, Gloves, Goggles, multi-purpose combination respirator cartridge (US)

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