Overview
Hexadecanedioic acid (CAS 505-54-4 ), also known as thapsic acid, is a long-chain dicarboxylic acid used as a functional building block across specialty chemical formulations. Its bifunctional acid structure makes it a reactive intermediate for polymer synthesis.
This versatile chemical is essential for creating ester-based lubricants and advanced emulsifier systems. In lubricant and metalworking fluid formulations, it serves as a precursor to complex ester base fluids that deliver high-temperature stability.
These fluids are valued for providing low-friction performance in demanding industrial environments. Personal care manufacturers incorporate it into wax esters and emollient systems where controlled spreading and surface modification are required.
Food-grade ester derivatives produced from this acid are used as emulsifiers and release agents in processed food applications. In polymer chemistry, it functions as a diacid monomer for nylon and polyester synthesis.
The material contributes to the development of high-performance materials with defined chain length and thermal properties. Hexadecanedioic acid is supplied as a white crystalline powder or flake for easy handling.
Technical grade is the standard commercial form, with purity levels typically at 98% or higher. Food-grade and high-purity grades are available for applications requiring tighter specification compliance for global markets.
This includes ester synthesis destined for food or cosmetic end use where purity is critical. Our product meets rigorous industry requirements to ensure consistent performance across all manufacturing and synthesis batches.
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Physical Properties
| Melting Point | 122.3 °C |
| Boiling Point | 160-165 °C @ Press: 0.7 Torr |
| Density | 1.0351 (rough estimate) |
| Appearance | white powder |
| Color | White to Off-White |
| Form | Solid |
| Water Solubility | 5.098mg/L at 20℃ |
| Vapor Pressure | 0Pa at 25℃ |
| Refractive Index | 1.4485 (estimate) |
| Log P | 4.67 at 25℃ |
Safety & Handling
Warning GHS07 Hazard Statements H315 Causes skin irritation H319 Causes serious eye irritation H335 May cause respiratory irritation Precautionary Statements P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P264 Wash … thoroughly after handling. P271 Use only outdoors or in a well-ventilated area. P280 Wear protective gloves/protective clothing/eye protection/face protection. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P332+P317 Get emergency medical help. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P362+P364 Take off contaminated clothing and wash it before reuse. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Trade & Regulatory
| HS Code | 29171900 |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 3 |
Other Names
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Chemical Properties
- CAS Number
- 505-54-4
- EC Number
- 208-013-5
- Mol. Weight
- 286.41
- HS Code
- 29171900
- Category
- Oils, Fats & Waxes