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294993

Sigma-Aldrich

Ammonia

greener alternative

anhydrous, ≥99.98%

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Synonym(s):
Ammonia gas
Linear Formula:
NH3
CAS Number:
Molecular Weight:
17.03
Beilstein/REAXYS Number:
3587154
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

grade

anhydrous

Quality Level

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.

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

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1 of 4

This Item
208329223441395048
vibrant-m

294993

Ammonia

vibrant-m

208329

Sodium amide

vibrant-m

223441

Sodium hydride

vibrant-m

395048

Methylamine solution

grade

anhydrous

grade

-

grade

-

grade

-

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

bp

−33 °C (lit.)

bp

400 °C (lit.)

bp

-

bp

40 °C

density

0.7 g/cm3 at -33 °C

density

-

density

-

density

0.785 g/mL at 25 °C

vapor pressure

8.75 atm ( 21 °C)

vapor pressure

-

vapor pressure

-

vapor pressure

10.86 psi ( 55 °C), 2.07 psi ( 20 °C)

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.
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.
Reagent for chemical vapor deposition of TiN.

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

Legal Information

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

Hose barb

Product No.
Description
Pricing

purge valve

Product No.
Description
Pricing

signalword

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

Storage Class

2A - Gases

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

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


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