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Oxides and peroxides

Chromate

Also known as Chromate ion, Chromate ions, Chromate (CrO42-)

CAS 11104-59-9Formula CrO4-2Molar mass 115.99 g/mol
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Chromate chemical structure, CrO4-2, CAS 11104-59-9
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
11104-59-9
Formula
CrO4-2
Molar mass
115.99 g/mol
HS code
281990
Category
Oxides and peroxides

What is Chromate?

Plain description, key identifiers and synonyms

Chromate(2-) is a chromium oxoanion resulting from the removal of two protons from chromic acid. It has a role as an oxidising agent. It is a chromium oxoanion and a divalent inorganic anion. It is a conjugate base of a hydrogenchromate.

Chromate is an anion, CrO₄²⁻, a moderately strong oxidizing agent.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
dioxido(dioxo)chromium
CAS number
11104-59-9Other or deprecated CAS: 13907-45-4
Molecular formula
CrO4-2
UNII
9S2Y101D6M
InChIKey
ZCDOYSPFYFSLEW-UHFFFAOYSA-N
InChI
InChI=1S/Cr.4O/q;;;2*-1
SMILES (canonical and isomeric)
[O-][Cr](=O)(=O)[O-]

Synonyms

  • Chromate ion
  • Chromate ions
  • Chromate (CrO42-)
  • chromate(2-)
  • CrO42-
  • tetraoxochromate(VI)
  • tetraoxochromate(2-)
  • Chromate anion
  • tetraoxidochromate(VI)
  • tetraoxidochromate(2-)
  • CrO4(2-)
  • Chromate (cro42-) ion
  • Chromate anion (cro42-)
  • [CrO4](2-)
  • (CrO4)(2-)
  • dioxido(dioxo)chromium
  • Chromate(VI)
  • chromates
  • CrO42?
  • Chromate Standard: CrO4(-2) @ 1000 microg/mL in H2O
  • Chromate Standard: CrO4(-2) @ 10000 microg/mL in H2O
  • diketo(dioxido)chromium
  • Chromate, wood preservative
  • Tetrakis(oxido)chromate(2-)
  • Organic Acid Salt Standard - Chromate
Show all 28 synonyms
  • Ion Chromatography Anion Std Chromate 0.2mg/mL (200 ppm)
  • Ion Chromatography Anion Std Chromate 1mg/mL (1000 ppm)
  • Chromate(1-),bis[5-(aminosulfonyl)-2-[2-[1-(3-chlorophenyl)-4,5-dihydro-3-methyl-5-(oxo-kO)-1H-pyrazol-4-yl]diazenyl-kN1]benzoato(2-)-kO]-, hydrogen (1:1)

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
115.99 g/molcalc.
Exact mass
115.9213 Dacalc.
LogP (octanol/water)
-2.62calc.
Topological polar surface area
80.26 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
0calc.
Heavy atoms
5calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
-2calc.
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.

Chromate suppliers

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All 2 suppliers

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Where suppliers are based

2 suppliers in 2 countries

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Chromate price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Roles

  • oxidising agent

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2819.90Indicative HS code

Chromium oxides and hydroxides, other

World exports in 2024
$181M
+6.6% vs 2023, imports $320M
2019 to 2024
Top exporters
  1. Kazakhstan * partner reported35.8%
  2. China24.0%
  3. Germany23.8%
Top importers
  1. Estonia29.4%
  2. United Kingdom18.3%
  3. Spain10.1%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Chromate is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Chromate?

Chromate(2-) is a chromium oxoanion resulting from the removal of two protons from chromic acid. It has a role as an oxidising agent. It is a chromium oxoanion and a divalent inorganic anion. It is a conjugate base of a hydrogenchromate.

What is the CAS number of Chromate?

The CAS registry number of Chromate is 11104-59-9. Other or deprecated CAS numbers: 13907-45-4.

What is the molecular formula and weight of Chromate?

The molecular formula of Chromate is CrO4-2 and its molar mass is 115.99 g/mol.

What is Chromate used for?

Known uses and roles of Chromate include oxidising agent.

Is Chromate hazardous?

No GHS hazard classification for Chromate 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 Chromate?

Chromate is usually classified under HS code 281990 (Chromium oxides and hydroxides, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Chromate?

CompoundList lists 2 suppliers of Chromate in China and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Chromate?

Suppliers quote Chromate 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 Chromate

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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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