Dipicolinic acid
CAS 499-83-2
EC 207-894-3
Formula C7H5NO4
MW 167.12 g/mol
Organic Acids Personal Care & CosmeticsFood & Nutrition Preservation & BiocideCatalysisFlavoring & Acidulant
Description
Dipicolinic acid (DPAc, 2,6-Dicarboxypyridine; CAS 499-83-2) is a naturally occurring pyridine dicarboxylic acid found in bacterial endospores. It carries no assigned E-code. The compound is commercially produced as a white crystalline powder with molecular formula C7H5NO4.
In personal care formulations, DPAc functions as a skin conditioner and chelation-assisted preservative, disrupting microbial metal-dependent enzyme activity to extend product shelf life. In food applications, it acts as a flavorant and acidulant, contributing mild tartness. It also serves as a coordination catalyst in select organic synthesis processes.
DPAc is supplied in technical and high-purity grades suitable for cosmetic and food-contact applications, with compliance documentation available under REACH (EC 207-894-3). It is classified under HS code 29333999 for EU customs purposes. Standard packaging includes 25 kg bags or drums; smaller research quantities are available on request.
In personal care formulations, DPAc functions as a skin conditioner and chelation-assisted preservative, disrupting microbial metal-dependent enzyme activity to extend product shelf life. In food applications, it acts as a flavorant and acidulant, contributing mild tartness. It also serves as a coordination catalyst in select organic synthesis processes.
DPAc is supplied in technical and high-purity grades suitable for cosmetic and food-contact applications, with compliance documentation available under REACH (EC 207-894-3). It is classified under HS code 29333999 for EU customs purposes. Standard packaging includes 25 kg bags or drums; smaller research quantities are available on request.
Physical Properties
| 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 |
Safety & Handling (Learn More)
Danger GHS05 GHS07
H
H314H315H318H319H335
P
P260P261P264P271P280P316P317P319P321P363P405P501P264+P265P302+P352P304+P340P332+P317P337+P317P362+P364P403+P233P301+P330+P331P302+P361+P354P305+P351+P338P305+P354+P338
Trade & Regulatory
| HS Code | 29333999 |
| WGK (Germany) | 3 |
Other Names
Pyridine-2,6-dicarboxylic acidDPADPAc'DIPICOLINIC ACID'IFLAB-BB F0451-0137RARECHEM AL BO 1335
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