Overview
Ellagic acid (CAS 476-66-4 ) is a naturally derived polyphenol extracted primarily from pomegranate, oak galls, and other tannin-rich plant sources. In food and cosmetic manufacturing, it functions as an antioxidant and skin-brightening active.
This versatile compound protects formulations and finished products from oxidative degradation. In cosmetic formulations, it is incorporated into serums, creams, and spot-treatment products targeting hyperpigmentation.
The ingredient inhibits melanin synthesis to deliver a measurable brightening effect. Food manufacturers use it as a natural antioxidant to extend shelf life in functional beverages, nutraceutical supplements, and fortified food products.
In dietary supplement production, it is supplied as a standardized botanical extract. It is positioned as a premium plant-based antioxidant ingredient for capsule and tablet formats to meet consumer demand for natural labels.
Cosmetic formulators also apply it in anti-aging product lines where oxidative stress protection is a key performance claim. The material is available as a fine yellow powder, typically supplied as a standardized extract.
Defined polyphenol content ranges from 40% to 98% purity depending on the application. Food-grade and cosmetic-grade specifications are the most commercially prevalent for industrial use and product development.
High-purity grades are suitable for nutraceutical and premium skincare applications. Bulk quantities are available for industrial formulators, with smaller quantities offered for R&D and pilot-scale production needs.
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Physical Properties
| Melting Point | >360 °C |
| Boiling Point | 363.24°C (rough estimate) |
| Density | 1.667 |
| Appearance | cream to light yellow crystalline solid |
| Color | tan to gray |
| Form | powder |
| Water Solubility | <0.1 g/100 mL at 21 ºC |
| Refractive Index | 1.5800 (estimate) |
| Log P | 0.239 (est) |
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 | 29322000 |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 3 |
Other Names
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Chemical Properties
- CAS Number
- 476-66-4
- EC Number
- 207-508-3
- Mol. Weight
- 302.19
- HS Code
- 29322000
- Category
- Pigments & Colorants