Overview
Tridecanedioic acid (CAS 505-52-2 ), also known commercially as brassylic acid, is a long-chain aliphatic dicarboxylic acid used as a monomer and functional ingredient across polymer, lubricant, and personal care manufacturing.
Its 13-carbon diacid structure makes it a sought-after building block where chain length directly influences end-product flexibility and performance. In polymer synthesis, it serves as a monomer for producing polyamides.
These polyesters offer enhanced flexibility and low-temperature performance, which is particularly relevant for specialty nylon grades and hot-melt adhesives. Lubricant formulators use it to produce diester base fluids.
These additive components are essential where thermal stability and film strength are required. In personal care, brassylic acid derivatives appear in emollient esters and conditioning agents targeted at skin and hair formulations.
Printing and packaging applications include its use in alkyd resin modification and ink binder systems requiring improved adhesion and substrate compatibility. This chemical is supplied as a white crystalline powder.
Standard commercial grades include technical and high-purity variants, with some suppliers offering material meeting polymer-grade specifications for monomer applications. Packaging typically ranges from kilogram-scale bags to bulk quantities.
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Physical Properties
| Melting Point | 111 °C |
| Boiling Point | 215-217 °C @ Press: 2 Torr |
| Density | 1.15 g/cm3 (25℃) |
| Appearance | white to light yellow powder |
| Color | White to Off-White |
| Form | Solid |
| Water Solubility | Insoluble |
| Vapor Pressure | 0Pa at 20℃ |
| Refractive Index | 1.4453 (estimate) |
| Log P | 3.3 at 25℃ |
Safety & Handling
Warning GHS07 Hazard Statements H315 Causes skin irritation H319 Causes serious eye irritation H335 May cause respiratory irritation H412 Harmful to aquatic life with long lasting effects 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. P273 Avoid release to the environment. 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 | 29171990 |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 3 |
Other Names
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Chemical Properties
- CAS Number
- 505-52-2
- EC Number
- 208-011-4
- Mol. Weight
- 244.33
- HS Code
- 29171990
- Category
- Organic Acids