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Silicates, borates and other salts

Strontium chromate

Also known as Strontium Yellow, Strontium chromate(VI), Sutokuro T

CAS 7789-06-2Formula CrO4SrMolar mass 203.61 g/molEC 232-142-6
GHS signal word: Danger. Pictograms: Harmful or irritant, Serious health hazard, Hazardous to the environment 20 suppliers listed
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Strontium chromate chemical structure, CrO4Sr, CAS 7789-06-2
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Yellow powder
Melting point
Decomposes
Density
3.9 g/cm³
Solubility
0.12 g/100 mL water at 15 °C, 3 g/100 mL at 100 °C
HS code
284150
Category
Silicates, borates and other salts
UN number
UN 3077
Illustrative photo, yellow pigment powder in an open kraft paper sack in a chemical plant
Typical packagingIllustrative packaging image, not the actual product

What is Strontium chromate?

Plain description, key identifiers and synonyms

Strontium Chromate is a yellowish, crystalline, inorganic compound that emits toxic chromium fumes upon heating. Strontium chromate is highly corrosive and is a strong oxidizing agent. This substance is used as a colorant in polyvinyl chloride, in pyrotechnics, in chrome plating, in aluminum flake coatings, and as a corrosion inhibitor and metal conditioner. Strontium chromate primarily affects the lungs causing shortness of breath, bronchitis, pneumonia and asthma but can also affect the gastrointestinal tract, liver, kidneys and immune system. This substance is a known human carcinogen and is associated with an increased risk of developing lung cancer and cancer of the sinonasal cavity. (NCI05)

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
strontium dioxido(dioxo)chromium
CAS number
7789-06-2 CAS number cross-checked
EC number
232-142-6
Molecular formula
CrO4Sr
UNII
2W214M3GS2
MDL number
MFCD00049549
InChIKey
NVKTUNLPFJHLCG-UHFFFAOYSA-N
InChI
InChI=1S/Cr.4O.Sr/q;;;2*-1;+2
SMILES (canonical and isomeric)
[O-][Cr](=O)(=O)[O-].[Sr+2]

Synonyms

  • Strontium Yellow
  • Strontium chromate(VI)
  • Sutokuro T
  • Deep Lemon Yellow
  • Strontium chromate A
  • Strontium chromate (VI)
  • Strontium chromate (1:1)
  • Strontium chromate 12170
  • Strontium chromate X-2396
  • Strontium chromate (SrCrO4)
  • Chromic acid, strontium salt (1:1)
  • Chromic acid (H2CrO4), strontium salt (1:1)
  • strontium(2+) ion dioxochromiumbis(olate)
  • strontium, dioxido(dioxo)chromium
  • Strontium tetrakis(oxido)chromate(2-)
  • Chromic acid, stontium salt (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

Appearance
Yellow powderexp.
Odour
Odorlessexp.
Melting point
Decomposesexp.
Density
3.9 g/cm³exp.
Autoignition temperature
Not flammableexp.
Solubility
0.12 g/100 mL water at 15 °C, 3 g/100 mL at 100 °Cexp.

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
203.61 g/molcalc.
Exact mass
203.8258 Dacalc.
LogP (octanol/water)
-3calc.
Topological polar surface area
80.26 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
0calc.
Heavy atoms
6calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
2calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H302Harmful if swallowed.
  • H350May cause cancer.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (11)
  • P203Obtain, read and follow all safety instructions before use.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P318If exposed or concerned, get medical advice.
  • P330Rinse mouth.
  • P391Collect spillage.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 3077
Transport hazard class
6.1
Packing group
II

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

Full safety data and first aid

Strontium chromate suppliers

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

All 20 suppliers
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Where suppliers are based

20 suppliers in 5 countries

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Strontium chromate 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

Corrosion inhibitor in pigments, in electrochemical processes to control sulfate concentration of solutions.

Metal protective coatings to prevent corrosion, colorant in polyvinyl chloride resins, pyrotechnics, sulfate ion control in electroplating baths.

Anti-corrosive primer for zinc, magnesium, aluminum, and alloys used in aircraft manufacture.

Strontium chromate (strontium yellow) is used as an anti-corrosion primer for aluminum and its alloys in aircraft and ship construction.

How it is made

Strontium chromate is prepared by adding a solution of strontium salt to a solution of sodium chromate.

Strontium carbonate + sodium dichromate (precipitation)

Strontium chromate ... is made by precipitation of a water-soluble chromate solution using a strontium salt or of chromic acid using a strontium hydroxide solution.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 024-009-00-4

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 Strontium chromate is traded under.

HS 2841.50Indicative HS code

Salts of oxometallic or peroxometallic acids, other chromates and dichromates…

World exports in 2024
$15.6M
−1.3% vs 2023, imports $23.5M
2019 to 2024
Top exporters
  1. United States24.2%
  2. China21.1%
  3. France * partner reported13.7%
Top importers
  1. United States36.5%
  2. Japan15.8%
  3. Turkey7.9%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about Strontium chromate, based on the data on this page

What is Strontium chromate?

Strontium Chromate is a yellowish, crystalline, inorganic compound that emits toxic chromium fumes upon heating. Strontium chromate is highly corrosive and is a strong oxidizing agent.

What is the CAS number of Strontium chromate?

The CAS registry number of Strontium chromate is 7789-06-2.

What is the molecular formula and weight of Strontium chromate?

The molecular formula of Strontium chromate is CrO4Sr and its molar mass is 203.61 g/mol.

What is Strontium chromate used for?

Corrosion inhibitor in pigments, in electrochemical processes to control sulfate concentration of solutions. Metal protective coatings to prevent corrosion, colorant in polyvinyl chloride resins, pyrotechnics, sulfate ion control in electroplating baths.

Is Strontium chromate hazardous?

Strontium chromate carries the GHS signal word "Danger". Main hazards: harmful if swallowed, may cause cancer, very toxic to aquatic life. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Strontium chromate?

Strontium chromate is usually classified under HS code 284150 (Salts of oxometallic or peroxometallic acids, other chromates and dichromates…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Strontium chromate?

CompoundList lists 20 suppliers of Strontium chromate in India, China, United States, United Kingdom and 1 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Strontium chromate in India?

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

What is the price of Strontium chromate?

Suppliers quote Strontium 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 Strontium 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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