Diethylenetriaminepentaacetic acid | DTPA | CAS 67-43-6

Description

Diethylenetriaminepentaacetic acid (DTPA, CAS 67-43-6),  is a powerful polyamino carboxylic acid widely used as a chelating agent in water treatment, agriculture, pharmaceuticals, and industrial processes. With five carboxyl groups and three nitrogen atoms, DTPA forms stable complexes with metal ions, even under extreme pH and temperature conditions.

Parameter	Specification
Purity (%)	≥99%
Appearance	White crystalline powder
Solubility	Soluble in water, NaOH solutions
Molecular Formula	C₁₄H₂₃N₃O₁₀
Molecular Weight	393.35 g/mol
Melting Point	220–230°C
pH (1% Solution)	2.0–3.5
Heavy Metals	≤10 ppm

Packaging Options:

200 kg/drum: Standard industrial packaging.

1 kg/bag: For R&D or small-scale trials.

Custom packaging: Available upon request.

 

Key Advantages:

Exceptional Chelation: Binds di-/trivalent metals (Fe³⁺, Cu²⁺, Ca²⁺) more effectively than EDTA.
Broad pH Stability: Performs in acidic to alkaline conditions (pH 2–12).
High Thermal Resistance: Stable up to 150°C for industrial applications.
Regulatory Compliance: Meets ISO 9001, REACH, and FDA (for specific grades).

 

Applications:

• Water Treatment:

Removes scale-forming ions (Ca²⁺, Mg²⁺) in boilers and cooling systems.

Treats heavy metal-contaminated wastewater (e.g., Pb, Hg).

• Agriculture:

Micronutrient fertilizer additive (Fe-DTPA, Zn-DTPA) to prevent metal precipitation in soil.

• Pharmaceuticals & Cosmetics:

Stabilizer in injectable drugs (e.g., MRI contrast agents).

Antioxidant in creams by chelating pro-oxidant metals.

• Industrial Processes:

Textile dyeing (improves color fastness).

Pulp/paper bleaching (reduces metal-catalyzed degradation).

 

Quality Assurance:

Batch-specific COA: Includes HPLC purity, residual solvent, and heavy metal tests.

Traceability: Full MSDS/SDS provided with shipments.

 

Safety & Handling:

Hazard Classification: Non-flammable; may cause eye/skin irritation (H319, H315).

Storage: Keep in a dry, cool place (<30°C); shelf life of 36 months.

First Aid: Rinse with water if contacted; seek medical help if ingested.

 

Logistics:

Shipping: 200 kg/drums (UN non-hazardous).

Global Delivery: DAP/DDP terms supported; samples available.