PENTETIC ACID- ▸ Pulp & paper: Peroxide stabilizer in bleaching
- ▸ Detergents: Metal-ion and hardness-control builder
- ▸ Water treatment: Scale and metal-ion sequestrant
- ▸ Micronutrient chelates: Carrier for Fe-, Zn-, and Mn-DTPA chelates
- ▸ Photographic processing: Sequestrant in processing solutions
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.
Request SDS →Diethylenetriaminepentaacetic acid (CAS 67-43-6), or DTPA, is an aminopolycarboxylic chelating agent. It sequesters polyvalent metal ions and is used to stabilize peroxide in pulp and paper bleaching, to control metal ions and hardness in detergents and water treatment, in photographic processing, and as the carrier for micronutrient metal chelates such as iron-DTPA.
Frequently Asked Questions
What is DTPA used for?
DTPA (diethylenetriaminepentaacetic acid, CAS 67-43-6) is an aminopolycarboxylic chelating agent that sequesters polyvalent metal ions. Industrial uses include peroxide stabilization in pulp-and-paper bleaching, metal-ion and hardness control in detergents and water treatment, photographic processing, and as the carrier for micronutrient metal chelates such as iron-DTPA.
What is CAS 67-43-6?
CAS 67-43-6 identifies diethylenetriaminepentaacetic acid (DTPA), molecular formula C14H23N3O10, an aminopolycarboxylic chelating/sequestering agent. Reference this CAS on RFQs to ensure correct identity versus DTPA salts. It classifies under HS 2922.49.
How does DTPA work as a chelating agent?
DTPA binds polyvalent metal ions through its multiple carboxylate and amine groups, forming stable water-soluble complexes that prevent the metals from catalyzing unwanted reactions — for example stabilizing peroxide in bleaching and controlling hardness ions in cleaning. This sequestration is the basis of its use in water treatment and detergents. Performance specifications are on the CoA.
What is the difference between DTPA acid and DTPA salts?
DTPA (CAS 67-43-6) is the free pentaacetic acid; its sodium salts (e.g., penta- or other sodium DTPA) are the neutralized, more water-soluble forms used directly in aqueous baths. Select acid versus salt based on your pH and solubility requirements. RawSource can quote the form suited to your process.
How is DTPA supplied in bulk?
RawSource supplies DTPA to pulp-and-paper, detergent, water-treatment, and agricultural-chelate manufacturers in bags, drums, and bulk formats under HS 2922.49. Grade, packaging, and MOQ are confirmed at quotation against the CoA. Submit a bulk RFQ with your required volume and form (acid or salt).