Overview
Tetradecanedioic acid (CAS 821-38-5 ), also known as Dodecamethylenedicarboxylic acid, is a long-chain dicarboxylic acid used across personal care, food, and industrial formulation.
Its bifunctional acid structure enables surface modification, emulsification, and lubrication in demanding applications. In personal care formulations, it functions as a conditioning and surface-modifying agent.
It is used in skin and hair products to improve texture and film-forming performance. Lubricant formulators incorporate it as a base component or additive in metalworking fluids and specialty greases.
The specific chain length contributes to film durability under load. Food-grade applications include its use as an acidulant or processing aid in regulated formulations where long-chain diacids are permitted.
It also serves as a building block in polyamide and polyester synthesis. The C14 backbone influences the flexibility and melting profile of the resulting polymer during the manufacturing process.
Tetradecanedioic acid is supplied as a white crystalline powder or fine granules. It is available in technical and food-grade specifications, with material compliant with FCC standards.
Purity grades typically range from 98% to 99% or higher. Documentation is available to support regulatory submissions in food and cosmetic markets to ensure full compliance with safety protocols.
Contact us for supply of Tetradecanedioic acid
Physical Properties
| Melting Point | 127 °C |
| Boiling Point | 427.81°C (rough estimate) |
| Density | 1.0768 (rough estimate) |
| Appearance | white fine powder |
| Color | White to Off-White |
| Form | Liquid |
| Water Solubility | SLIGHTLY SOLUBLE |
| Vapor Pressure | 1.3hPa at 20℃ |
| Refractive Index | 1.4650 (estimate) |
| Log P | 4.2 at 25℃ |
Safety & Handling
Danger GHS05 GHS07 Hazard Statements H315 Causes skin irritation H318 Causes serious eye damage 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. P317 Get emergency medical help. 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. P305+P354+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
Related Products
Chemical Properties
- CAS Number
- 821-38-5
- EC Number
- 212-476-9
- Mol. Weight
- 258.35
- HS Code
- 29171900
- Category
- Organic Acids