- ▸ Textile dyeing: calico printing and dyeing reagent
- ▸ Bleaching: bleaching of straw, leather and wood
- ▸ Cleaning: metal and wood cleaning, paint and stain removal
- ▸ Purification: methanol purification and crude-glycerol decolorizing
- ▸ Chelating agent: metal-ion sequestration
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
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Transport classification per the UN Model Regulations / 49 CFR 172.101 Hazardous Materials Table. Confirm against the grade-specific SDS (Section 14) before shipping.
Oxalic acid dihydrate (CAS 6153-56-6; C2H2O4 – 2H2O) is the crystalline dihydrate form of oxalic acid, supplied in technical grade. Established uses include calico printing and dyeing, bleaching of straw and leather, cleaning of wood and metals, methanol purification, crude-glycerol decolorizing, paint and stain removal, and service as a chelating and bleaching agent.
Frequently Asked Questions
What is oxalic acid dihydrate used for?
Oxalic acid dihydrate, technical grade (CAS 6153-56-6; C2H2O4·2H2O), is used in calico printing and dyeing, bleaching of straw, leather, and wood, metal and wood cleaning, paint and stain removal, methanol purification, crude-glycerol decolorizing, and as a chelating agent.
What is the difference between oxalic acid and oxalic acid dihydrate?
The dihydrate (CAS 6153-56-6) is the crystalline form carrying two water molecules per oxalic acid molecule, whereas anhydrous oxalic acid (CAS 144-62-7) has none. The dihydrate is the common commercial crystalline solid; its molar mass and assay calculations account for the bound water.
What is oxalic acid dihydrate?
It is the crystalline dihydrate form of oxalic acid, the simplest dicarboxylic acid, supplied in technical grade as a chelating and bleaching reagent for cleaning, textile, and purification applications.
How is oxalic acid dihydrate shipped under DOT?
Oxalic acid dihydrate is assigned UN3261 and ships as a regulated material; packaging, labeling, and documentation follow that classification. Refer to the SDS for the full transport profile; we arrange compliant bulk shipment.
What is the cost of bulk oxalic acid dihydrate (tech)?
Technical-grade dihydrate pricing depends on volume, packaging, and freight. Request a current landed quote with your required quantity and delivery point; we do not publish a fixed price.