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
Calcium sulfate dihydrate
CAS 10101-41-4 · H4CaO6S · ≥95% Purity
Structural formula1. Product identity
| Product name | Calcium sulfate dihydrate |
|---|---|
| C.A.S. number | 10101-41-4 |
| Molecular formula | H4CaO6S |
| Molecular weight | 172.17 g/mol |
| Grade / standard | ≥95% Purity |
| Description | White powder |
| Product group | Minerals & Extenders |
| Category | Pigments & Minerals |
| 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 | White 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 95.0 % w/w | 96.09 | Titrimetry / Instrumental |
| 5 | Shade | Matching approved standard | Matches standard | Visual / Spectrophotometric |
| 6 | Strength vs. Standard | 100 ± 3 % | 100.9 % | Spectrophotometry |
| 7 | Moisture | Not more than 5.0 % w/w | 2.20 | Gravimetry |
| 8 | Matter Insoluble in Water | Not more than 1.0 % w/w | 0.138 | Gravimetry |
| 9 | Oil Absorption | As per specification | 26 g/100 g | ISO 787-5 |
| 10 | Residue on 45 µm Sieve | Not more than 0.1 % | 0.009 | ISO 787-18 |
| 11 | pH (10 % aqueous suspension) | 6.0 – 9.0 | 8.3 | ISO 787-9 |
3. Declaration
This document sets out the standard specification for Calcium sulfate dihydrate 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.
SCAPEXQUALITY ASSURED