Molekula
Sodium dichromate dihydrate
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
Sodium dichromate dihydrate is an orange crystalline inorganic salt composed of sodium, chromium, and oxygen, widely used in industrial applications such as metal plating, leather tanning, and as an oxidizing agent in chemical synthesis. Its industrial uses also include pigment and paint manufacture, textile dyeing and finishing, and glass manufacturing. It is also employed in laboratory settings for analytical chemistry and cleaning glassware. This chemical has a CAS number of 7789-12-0, with the molecular formula Na₂Cr₂O₇·2H₂O and a molecular weight of 298.00 g/mol. It is stored at ambient conditions but requires careful handling due to its hazardous nature, marked by the signal word "Danger." Molekula supplies sodium dichromate dihydrate 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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1 kg — $351.50 per pack
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Specifications
| Property | Value |
|---|---|
| Appearance | Orange red crystalline powder |
| Chloride (Cl-) | ≤ 0.005% |
| Assay | ≥ 99.5% |
| Iron (Fe) | ≤ 0.0005% |
| Calcium (Ca) | ≤ 0.005% |
| Aluminium (Al) | ≤ 0.002% |
| Sulphates (SO4)(2-) | ≤ 0.02% |
| Insoluble in water | ≤ 0.003% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 5.1 (6.1) |
| Packing Group | II |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 25461430 |
| CAS Number | 7789-12-0 |
| IUPAC Name | disodium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium;dihydrate |
| EC Number | 234-190-3 |
| Molecular Formula | Na2Cr2O7 · 2H2O |
| Molecular Weight | 298.00 |
| Exact Mass | 297.8461 |
| SMILES | O.O.[O-][Cr](=O)(=O)O[Cr](=O)(=O)[O-].[Na+].[Na+] |
| InChIKey | JYDRNIYTFCBIFC-UHFFFAOYSA-N |
| InChI | InChI=1S/2Cr.2Na.2H2O.7O/h;;;;2*1H2;;;;;;;/q;;2*+1;;;;;;;;2*-1 |
| PubChem CID | 108005 |
| UN Number | UN3087 |
| REACH Code | Y110 |
| HTS Code | 28413000 |
| Tariff Code | 2841300000 |
Safety & GHS
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Oxidizing
GHS03
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Corrosive
GHS05
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Toxic
GHS06
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Serious Health Hazard
GHS08
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Hazardous to the Environment
GHS09
Hazard statements
- H272 May intensify fire; oxidizer
- H300 + H330 Fatal if swallowed or if inhaled
- H311 Toxic in contact with skin
- H314 (sub cat. 1B) Causes severe skin burns and eye damage
- H317 May cause an allergic skin reaction
- H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled
- H340 May cause genetic defects
- H350 May cause cancer
- H360FD May damage fertility. May damage the unborn child.
- H372 Causes damage to organs through prolonged or repeated exposure
- 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
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Russian, Spanish.
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
- Chromic acid (H2Cr2O7), disodium salt, dihydrate
- DICHROMIC ACID (H2Cr2O7), DISODIUM SALT, DIHYDRATE
- DICHROMIC ACID, DISODIUM SALT, DIHYDRATE
- Disodium dichromate dihydrate
- disodium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium;dihydrate
- SODIUM CHROMATE (NA2CR2O7) DIHYDRATE
- sodium dichromate (VI) dihydrate
- SODIUM DICHROMATE DIHYDRATE (NA2CR2O7.2H2O)
- Sodium dichromate dihydrate (VI)
- Sodium mu-oxidohexakis(oxido)dichromate(2-)--water (2/1/2)
Frequently asked questions
What is sodium dichromate dihydrate commonly used for?
Sodium dichromate dihydrate is primarily used as an oxidizing agent in chemical synthesis, electroplating, leather tanning, and as a cleaning agent for glassware in laboratories.
What is the chemical formula and molecular weight of sodium dichromate dihydrate?
The chemical formula is **Na₂Cr₂O₇·2H₂O**, and the molecular weight is **298.00 g/mol**.
How should sodium dichromate dihydrate be stored?
Store in a tightly sealed container at **ambient temperature**, away from incompatible substances like organic materials, reducing agents, and strong acids.
What grade of sodium dichromate dihydrate does Molekula supply?
Molekula supplies **technical/industrial grade** sodium dichromate dihydrate, suitable for most industrial and laboratory applications.
Can Molekula supply sodium dichromate dihydrate in bulk quantities?
Yes, Molekula can supply sodium dichromate dihydrate in bulk, with quantities tailored to your specific requirements—please contact us for pricing and availability.
What documentation comes with an order of sodium dichromate dihydrate?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and a **packing list** for compliance and safety.
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