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Oxalic acid dihydrate

CAS 6153-56-6 C2H2O4 · 2H2O MW 126.07 In stock

Oxalic acid dihydrate is a white crystalline solid used in cleaning, bleaching, and as a reagent in chemical synthesis. It is a strong organic acid commonly employed in metal cleaning and rust removal. Available in powder or crystal form, it has a molecular weight of 126.07 g/mol, a molecular formula of C₂H₂O₄ · 2H₂O, and a CAS number of 6153-56-6. Store at ambient temperature. Handle with care due to its toxicity and corrosive nature. Molekula supplies Oxalic acid dihydrate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.

CoA by batch

Overview

Oxalic acid dihydrate is a white crystalline solid used in cleaning, bleaching, and as a reagent in chemical synthesis. It is a strong organic acid commonly employed in metal cleaning and rust removal. Available in powder or crystal form, it has a molecular weight of 126.07 g/mol, a molecular formula of C₂H₂O₄ · 2H₂O, and a CAS number of 6153-56-6. Store at ambient temperature. Handle with care due to its toxicity and corrosive nature. Molekula supplies Oxalic acid dihydrate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.

Specifications

Property Value
Appearance White crystalline powder
Assay 99.5% min

Storage & handling

Property Value
Storage Temperature Ambient
Shelf Life 24 months
Acidity Acid

Identification

Property Value
CAS Number 6153-56-6
Molecular Formula C2H2O4 · 2H2O
Molecular Weight 126.07
SMILES C(=O)(C(=O)O)O.O.O
REACH Code Y110
TSCA Listed Yes
HTS Code 29171100
Tariff Code 2917110091

Safety & GHS

Danger
  • GHS pictogram — Explosive Explosive GHS01
  • GHS pictogram — Flammable Flammable GHS02
  • GHS pictogram — Compressed Gas Compressed Gas GHS04

Hazard statements

  • H302 Harmful if swallowed
  • H312 Harmful in contact with skin
  • H318 Causes serious eye damage
  • H373 May cause damage to organs through prolonged or repeated exposure

Precautionary statements

  • P260 Do not breathe dust/fume/gas/mist/vapours/spray
  • P280 Wear protective gloves/protective clothing/eye protection/face protection
  • P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
  • P302+352 IF ON SKIN: Wash with soap and water
  • P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
  • P314 Get medical advice/attention if you feel unwell

For research and industrial use only

Not for use in food, drugs, household, or in or on humans or animals. Consult the Safety Data Sheet before handling.

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.

Pricing & pack sizes

Pack sizes & pricing

  • 1 kg

    £71.60 · per pack

  • 100 g

    £40.00 · per pack

Prices exclude VAT/sales tax and shipping. Bulk and custom pack sizes available on request.

Synonyms

No alternate names recorded for this product.

Frequently asked questions

What is oxalic acid dihydrate used for?

It is commonly used as a cleaning agent, rust remover, and in the synthesis of other chemicals, including pharmaceuticals and dyes.

What is the chemical formula and molecular weight of oxalic acid dihydrate?

The formula is C2H2O4 · 2H2O with a molecular weight of 126.07 g/mol.

How should oxalic acid dihydrate be stored?

It should be stored at ambient temperature in a dry, well-ventilated area away from incompatible materials.

What grade is available for oxalic acid dihydrate?

We offer reagent grade oxalic acid dihydrate suitable for laboratory and industrial applications.

Can Molekula supply oxalic acid dihydrate in bulk?

Yes, we can supply oxalic acid dihydrate in bulk quantities—please contact our sales team for pricing and availability.

What documentation comes with an order of oxalic acid dihydrate?

Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.

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.

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