Dipicolinic acid

CAS Number
499-83-2
EC Number
207-894-3
Abbreviation
DPA

What is Dipicolinic acid?

Dipicolinic acid (CAS 499-83-2), commonly abbreviated as DPA, is a pyridine-based dicarboxylic acid.

Where is Dipicolinic acid used?

  • Food and flavoring: acidulant and flavor modifier in processed formulations
  • Personal care and cosmetics: preservation systems that disrupt microbial activity
  • Catalyst preparation: metal-chelating precursor
  • Organic synthesis and polymerization: coordination complexes
  • Analytical chemistry: reference standard for spore detection assays
  • It is a recognized biomarker for bacterial endospores in specialized laboratory testing.

Good to know: High-purity grades are suited to analytical, food, and cosmetic end uses; technical grade is for industrial and catalytic applications.

Commercial specifications

  • Technical grade and high-purity grades
  • Packaging from laboratory-scale quantities to bulk orders

Other Names (Synonyms)

2,6-Dipicolinic acid|2,6-dicarboxypyridine|2,6-pyridinedicarboxylic acid|PYRIDINE-2,6-DICARBOXYLIC ACID|UE81S5CQ0G|DPAc|DPA

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What are the physical properties of Dipicolinic acid?

Melting Point 249 °C (decomp)
Boiling Point 295.67°C (rough estimate)
Density 1.5216 (rough estimate)
Flash Point 188 °C
Appearance White crystalline powder
Color White
Form Crystalline Powder
Water Solubility 5 g/L (20 ºC)
Vapor Pressure <0.01 hPa (20 °C)
Refractive Index 1.6280 (estimate)
pH 2.0 (5g/l, H2O, 20℃)
Log P 0.3 at 25℃ and pH1.8

How is Dipicolinic acid classified and handled safely? Learn More

Danger
GHS05· Corrosive GHS07· Irritant

Hazard Statements

H314 Causes severe skin burns and eye damage
H315 Causes skin irritation
H318 Causes serious eye damage
H319 Causes serious eye irritation
H335 May cause respiratory irritation

Precautionary Statements

P260 Do not breathe dust/fume/gas/mist/vapours/spray.
P261 Avoid breathing dust/fume/gas/mist/vapours/spray.
P264 Wash … thoroughly after handling.
P271 Use only outdoors or in a well-ventilated area.

Which trade and regulatory codes apply to Dipicolinic acid?

HS Code 29333999
WGK (Germany) 3
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