Scapex Exports Pvt. Ltd.
830, 8th Floor, Sun Gravitas, Times of India Road,
Shyamal, Ahmedabad 380015, Gujarat, India
+91 9925522674 · info@scapexexports.com
CIN U46909GJ2025PTC164345
Shyamal, Ahmedabad 380015, Gujarat, India
+91 9925522674 · info@scapexexports.com
CIN U46909GJ2025PTC164345
Certificate of AnalysisStandard product specification
UV Absorber Benzotriazole (Tinuvin 328 type)
CAS 25973-55-1 · ≥99% Purity
1. Product identity
| Product name | UV Absorber Benzotriazole (Tinuvin 328 type) |
|---|---|
| C.A.S. number | 25973-55-1 |
| Grade / standard | ≥99% Purity |
| Description | Pale yellow powder |
| Product group | Photoinitiators & UV |
| Category | Paint, Ink & Coating Chemicals |
| Country of origin | India |
| Packing | Bags, drums, carboys, IBC or ISO tank as applicable — customer-specified packing available |
| Storage | Cool, dry, well-ventilated place in tightly closed original packing |
2. Analytical specification
| S. No. | Test parameter | Specification | Typical result | Method |
|---|---|---|---|---|
| 1 | Description | Pale yellow powder | Complies | Visual |
| 2 | Identification | Conforms to the structure of the substance | Complies | FTIR / Chemical test |
| 3 | Solubility | As per specification | Complies | Visual / Monograph |
| 4 | Assay | Not less than 99.0 % w/w | 99.48 | Titrimetry / Instrumental |
| 5 | Volatile Matter | Not more than 1.0 % w/w | 0.19 | Gravimetry |
| 6 | Ash Content | Not more than 0.5 % w/w | 0.166 | Gravimetry |
| 7 | Softening / Melting Point | As per specification | Conforms | ASTM D3461 / Capillary |
| 8 | Residue on 63 µm Sieve | Not more than 0.5 % | 0.024 | Sieve analysis |
| 9 | Heavy Metals (as Pb) | Not more than 20 ppm | Less than 10 ppm | ICP-OES |
| 10 | Moisture | Not more than 1.0 % w/w | 0.34 | Karl Fischer / Gravimetry |
3. Declaration
This document sets out the standard specification for UV Absorber Benzotriazole (Tinuvin 328 type) and applies to all consignments of this product and grade supplied by Scapex Exports Pvt. Ltd. It is not a lot-specific release document; a lot-specific certificate carrying the analysis of the material actually shipped is issued with, and travels with, each consignment. Scapex Exports supplies against customer-specified assay limits and pharmacopoeial standards — send your specification sheet and we confirm compliance in writing before the order is accepted.
Checked and Approved by Prem Panchal
For Scapex Exports Pvt. Ltd.
SCAPEXQUALITY ASSURED