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Coenzymes and cofactors

Ammonium

Also known as Ammonium ion, azanium, Ammonium cation

CAS 14798-03-9Formula H4N+Molar mass 18.04 g/mol
51 suppliers listed Drug substance
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Ammonium chemical structure, H4N+, CAS 14798-03-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
14798-03-9
Formula
H4N+
Molar mass
18.04 g/mol
HS code
285390
Category
Coenzymes and cofactors

What is Ammonium?

Plain description, key identifiers and synonyms

Ammonium is an onium cation obtained by protonation of ammonia. It has a role as a cofactor, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite and a human metabolite. It is a nitrogen hydride, an onium cation and a monovalent inorganic cation. It is a conjugate acid of an ammonia.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
azanium
CAS number
14798-03-9 CAS number cross-checkedOther or deprecated CAS: 14158-23-7, 15194-15-7, 6684-80-6
Molecular formula
H4N+
UNII
54S68520I4
InChIKey
QGZKDVFQNNGYKY-UHFFFAOYSA-O
InChI
InChI=1S/H3N/h1H3/p+1
SMILES (canonical and isomeric)
[NH4+]

Synonyms

  • Ammonium ion
  • azanium
  • Ammonium cation
  • Ammonium(1+)
  • NH4+
  • Ammonia ion
  • Ammonium ion(+)
  • nitrogen(1+)
  • Ammonium ion(1+)
  • Ammonium (NH4+)
  • Ammonium cation with d
  • Ammonium ion (NH4+)
  • NH4(+)
  • Ammonium Standard: NH4+ @ 1000 microg/mL in H2O
  • Ammonium Standard: NH4+ @ 10000 microg/mL in H2O
  • nitrenium ion
  • Nitrogen cation
  • Aminylium ion
  • a secondary amine
  • Ammonium Ion Chromatography Standard in H2O,Ammonium - NH4(+) @100microg/mL
  • Ammonium(+)
  • Nitrogen tetrahydride
  • hydridonitrogen(1+)
  • secondary amine(1+)
  • secondary ammonium ion
Show all 38 synonyms
  • Ammonia ion (NH2+)
  • Ammonia ion (NH4+)
  • Ammonium (8CI,9CI)
  • Ammonia, ion (NH41+)
  • Cation Standard - Ammonium
  • Ammonium Std 1000mg/L As N
  • [NH4]+
  • [NH4](+)
  • Ammonium Standard: NH4+ @ 100 microg/mL in H2O
  • Ion Chromatography Cation Std Ammonium 1mg/mL 1000 ppm
  • Ion Chromatography Cation Std Ammonium 0.2mg/mL 200 ppm
  • Ammonium standard solution (100 ppm NH4) (naturally short expiry)
  • European Pharmacopoeia Reagent Ammonium standard solution (2.5 ppm NH4)

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
18.04 g/molcalc.
Exact mass
18.0338 Dacalc.
LogP (octanol/water)
0.38calc.
Topological polar surface area
36.5 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
0calc.
Rotatable bonds
0calc.
Heavy atoms
1calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
1calc.
Stereocentres
0calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Ammonium suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 51 suppliers
30 of 30 offers

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Where suppliers are based

51 suppliers in 10 countries

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Ammonium price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Roles

  • Escherichia coli metabolite
  • Saccharomyces cerevisiae metabolite
  • animal metabolite
  • bacterial metabolite
  • cofactor
  • eukaryotic metabolite
  • fungal metabolite
  • human metabolite
  • mammalian metabolite
  • metabolite
  • prokaryotic metabolite

Functional uses

  • Processing aids not otherwise specified

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • Active ingredient in FDA approved drug labels

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Ammonium is traded under.

HS 2853.90Indicative HS code

Phosphides, whether or not chemically defined, excluding ferrophosphorus, other, other

World exports in 2024
$2.45B
−33.6% vs 2023, imports $816M
2019 to 2024
Top exporters
  1. China68.4%
  2. Israel8.1%
  3. United States4.9%
Top importers
  1. United States19.3%
  2. Japan17.9%
  3. China13.4%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Ammonium is indicative (it is known at chapter level only). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Ammonium, based on the data on this page

What is Ammonium?

Ammonium is an onium cation obtained by protonation of ammonia. It has a role as a cofactor, a Saccharomyces cerevisiae metabolite, an Escherichia coli metabolite and a human metabolite. It is a nitrogen hydride, an onium cation and a monovalent inorganic cation. It is a conjugate acid of an ammonia.

What is the CAS number of Ammonium?

The CAS registry number of Ammonium is 14798-03-9. Other or deprecated CAS numbers: 14158-23-7, 15194-15-7, 6684-80-6.

What is the molecular formula and weight of Ammonium?

The molecular formula of Ammonium is H4N+ and its molar mass is 18.04 g/mol.

What is Ammonium used for?

Known uses and roles of Ammonium include escherichia coli metabolite, saccharomyces cerevisiae metabolite, animal metabolite, bacterial metabolite, cofactor and 7 more.

Is Ammonium hazardous?

No GHS hazard classification for Ammonium is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Ammonium?

Ammonium is usually classified under HS code 285390 (Phosphides, whether or not chemically defined, excluding ferrophosphorus, other…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Ammonium?

CompoundList lists 51 suppliers of Ammonium in India, China, United States, Germany and 6 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Ammonium in India?

17 suppliers in India list Ammonium on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Ammonium?

Suppliers quote Ammonium on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Ammonium

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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