Certificate of Analysis and technical specification for Hydroquinone, Reagentplus — CAS 123-31-9. Applies to all consignments of this product and grade.
| Product Name | Hydroquinone, Reagentplus |
|---|---|
| C.A.S. Number | 123-31-9 |
| Product Category | Pharmaceutical Intermediates |
| Product Group | Phenolic Intermediates |
| Grade / Standard | 99% Pharma/Cosmetic Grade |
| Physical Form | White to light tan crystalline powder |
| Country of Origin | India |
| Packing | Standard export packing — bags, drums, carboys, IBC or ISO tank as applicable |
| Storage | Cool, dry, well-ventilated place in tightly closed original packing |
| S. No. | Test Parameter | Specification | Typical Result | Method |
|---|---|---|---|---|
| 1 | Description | White to light tan crystalline 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 | 99.28 | Titrimetry / Instrumental |
| 5 | Clarity & Colour of Solution | Clear; not more intensely coloured than reference | Complies | Visual (Monograph) |
| 6 | pH (1 % w/v aqueous solution) | As per monograph | 5.9 | Potentiometry |
| 7 | Water Content (Karl Fischer) | Not more than 0.5 % w/w | 0.07 | Karl Fischer titration |
| 8 | Melting Range / Point | As per monograph | Complies | Capillary method |
| 9 | Particle Size (d90) | As per specification | 192 µm | Laser diffraction |
| 10 | Total Aerobic Microbial Count | Not more than 1000 cfu/g | 70 cfu/g | IP / USP <61> |
| 11 | Total Yeast & Mould Count | Not more than 100 cfu/g | 9 cfu/g | IP / USP <61> |
| 12 | Escherichia coli | Absent in 1 g | Absent | IP / USP <62> |
| 13 | Salmonella species | Absent in 10 g | Absent | IP / USP <62> |
This document sets out the standard specification for Hydroquinone, Reagentplus and applies to all consignments of this grade. It is not a lot-specific release document; a lot-specific certificate carrying the analysis of the material actually shipped is issued with each consignment. Scapex Exports supplies against customer-specified assay limits and pharmacopoeial standards — send your specification sheet and we will confirm compliance before order.
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