Molekula
Potassium chromate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Potassium chromate is an inorganic compound used in laboratory analysis, corrosion inhibition, and as a precursor in chromium-based chemical synthesis. It appears as a yellow crystalline solid and is highly toxic and carcinogenic. CAS: 7789-00-6, Molecular formula: K2CrO4, Molecular weight: 194.19 g/mol, Storage: Ambient. Molekula supplies Potassium chromate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
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100 g — £62.30 per pack ex VAT · £74.76 inc. VAT
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Specifications
| Property | Value |
|---|---|
| Appearance | Yellow-green powder |
| pH | 8.6–9.8 |
| Chloride (Cl-) | ≤0.003% |
| Assay | ≥99.5% |
| Water insoluble matter | ≤0.004% |
| Calcium (Ca) | ≤0.005% |
| Sodium (Na) | ≤0.1% |
| Sulphates (SO4)(2-) | ≤0.02% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 6.1 |
| Packing Group | III |
| Acidity | Base |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Yellow orthorhombic crystals |
| Odour | Odorless |
| Melting Point | 968 °C |
| Boiling Point | 1000 °C |
Source: PubChem CID 24597 (HSDB, ICSC)
Identification
| Property | Value |
|---|---|
| SKU | 17408642 |
| CAS Number | 7789-00-6 |
| IUPAC Name | dipotassium;dioxido(dioxo)chromium |
| EC Number | 232-140-5 |
| Molecular Formula | K2CrO4 |
| Molecular Weight | 194.19 |
| Exact Mass | 193.8476 |
| SMILES | [O-][Cr](=O)(=O)[O-].[K+].[K+] |
| InChIKey | XMXNVYPJWBTAHN-UHFFFAOYSA-N |
| InChI | InChI=1S/Cr.2K.4O/q;2*+1;;;2*-1 |
| PubChem CID | 24597 |
| UN Number | UN3288 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 28419050 |
| Tariff Code | 2841500060 |
Safety & GHS
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Health Hazard
GHS07
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Serious Health Hazard
GHS08
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Hazardous to the Environment
GHS09
Hazard statements
- H315 Causes skin irritation
- H317 May cause an allergic skin reaction
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
- H340 May cause genetic defects
- H350i May cause cancer by inhalation
- H410 Very toxic to aquatic life with long lasting effects
Precautionary statements
- P201 Obtain special instructions before use
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P273 Avoid release to the environment
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
- Bipotassium chromate
- Chromate of potash
- Chromate of potass
- Chromic acid (H2CrO4), dipotassium salt
- Dipotassium chromate
- Dipotassium monochromate
- Neutral potassium chromate
- Potassium chromate (K2(CrO4))
- Potassium chromate(VI)
- Tarapacaite
Frequently asked questions
What is potassium chromate used for?
Potassium chromate is primarily used in the production of pigments, as a corrosion inhibitor, and in analytical chemistry as the indicator in the Mohr argentometric titration for chloride ions.
What is the chemical formula and molecular weight of potassium chromate?
The formula is K2CrO4 with a molecular weight of 194.19 g/mol.
How should potassium chromate be stored?
It should be stored at ambient temperature in a dry, well-ventilated area, away from incompatible materials.
What grade of potassium chromate does Molekula supply?
Molekula supplies potassium chromate in reagent grade, suitable for laboratory and industrial applications.
Can Molekula supply potassium chromate in bulk?
Yes, Molekula can supply potassium chromate in bulk quantities—please contact our sales team for pricing and availability.
What documentation comes with a purchase of potassium chromate?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) compliant with GHS standards.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.