Agriculture · Technical data sheet
DTPA Acid
Key Benefits
Physical & Chemical Properties
DTPA Acid is typically supplied as a white
crystalline powder with limited solubility in
water in its protonated form. It is commonly
neutralized to form soluble sodium salts
for practical applications.
Typical properties:
Product Overview
DTPA Acid (Diethylenetriaminepentaacetic acid) is a high-performance aminopolycarboxylic chelating
agent designed for strong and stable complexation of multivalent metal ions. It is particularly effective for
binding trivalent metals such as iron (Fe 3+), making it widely used in agriculture, water treatment, and
industrial processes. In its acid form, DTPA provides flexibility for neutralization and formulation into various
salt forms (Na₅, Na₃, etc.), allowing formulators to tailor pH and performance characteristics. It delivers
excellent chelation efficiency across a broad pH range, especially in neutral to moderately alkaline systems.
Chemical Identity
DTPA is an octadentate aminopolycarboxylate chelating agent.
Its structure contains five carboxylic acid groups (-COOH) and three
nitrogen atoms (amine groups). This enables formation of very stable
metal complexes, especially with Fe3+ and other multivalent ions.
DTPA Acid
Applications Guide
Agriculture (Micronutrients)
DTPA Acid is used to produce DTPA-based chelates, especially iron.
to approximately pH 7.5.
Chelate Manufacturing
DTPA Acid is neutralized with bases (NaOH, KOH) to produce
soluble chelates.
Water Treatment
Industrial Applications
Why Choose DTPA Acid?
DTPA Acid provides maximum flexibility and strongest chelation
performance, making it the preferred starting material for high
value chelate production.
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