Terephthalylidene Dicamphor Sulfonic Acid
CAS: 92761-26-7
Category: Cosmetic Ingredients
| Purity | Cosmetic Grade ≥98.0%, High Purity Grade ≥99.0% |
| Molecular Formula | C28H34O8S2 |
| Molecular Weight | 562.69 |
| Appearance | White to off-white crystalline powder or granules, odorless or with slight characteristic odor |
| Packaging | 25 kg fiber drum with inner polyethylene bag, 25 kg cardboard drum, or customized packaging according to customer requirements |
| Testing Indicators | Appearance — Visual inspection; Identification — FTIR spectroscopy and UV-Vis spectrophotometry; Purity — HPLC analysis; UV absorption spectrum — UV-Vis spectrophotometer (maximum absorption around 345 nm); Water content — Karl Fischer titration (ASTM E203); Sulfated ash — Gravimetric analysis; Heavy metals — ICP-OES analysis; pH value — Potentiometric measurement; Microbial limits — Plate count method for cosmetic applications; Residual solvents — GC analysis where applicable. |
| Storage Notes | Store in a cool, dry, and well-ventilated warehouse. Keep containers tightly sealed and protected from moisture, direct sunlight, and excessive heat. Avoid contact with strong oxidizing agents, strong acids, and strong alkaline substances. Store in original packaging and prevent contamination during handling. |
| Lead Time | 10 days |
Terephthalylidene Dicamphor Sulfonic Acid (Mexoryl SX) is a water-soluble organic UV filter widely used in sunscreen and personal care formulations. It provides broad-spectrum protection mainly against UVA radiation and is commonly incorporated into sunscreens, daily skincare products, anti-aging creams, and other cosmetic formulations. It improves photostability of formulations and is often combined with other UV filters to achieve enhanced sun protection performance.