| Test | Specification...BP |
| Characters | A colourless or slightly pinkish-grey, crystalline powder or crystals, turning red on exposure to light and air. |
| Identification Test (A) Test (B) Test (C) | (a) Melting Point (109°C to 112°C.) (b) An intense, deep-red colour develops which becomes pale yellow on the addition of a slight excess ofhydrochloric acidR (c) The solution shows an intense green fluorescence. |
| Solubility | Very soluble in water and in alcohol |
| Solution S | Specified Test |
| Appearance of solution | Solution S is clear (2.2.1) and not more intensely coloured than reference solution B5or R5(2.2.2, Method II) and remains so when heated in a water-bath for 5 min. |
| Acidity or Alkalinity | To 10mL of solution S add 0.05mL ofbromophenol blue solutionR2. Not more than 0.05mL of0.1Mhydrochloric acidor0.1Msodium hydroxideis required to change the colour of the indicator. |
| Related Substance | Specified test |
| Pyrocatechol | Specified test |
| Loss on Drying | Not more than 1.0% |
| Sulfated Ash | Not more than 0.1% |
| Assay | Not less than 98.5 per cent and not more than the equivalent of 101.0 per cent of benzene-1,3-diol, calculated with reference to the dried substance. |
| Test | Specification...USP |
| Characters | It occurs as a White, or practically white, needle-shaped crystals or powder. Has a faint, characteristic odor and a sweetish, followed by a bitter, taste. Acquires a pink tint on exposure to light and air. |
| Identification Test (A) Test (B) Test (C) | (a) Infrared Absorption. (b) The color changes to pale yellow. (c) A blue-violet color is produced, and it fades slowly. |
| Solubility | Freely soluble in water, in alcohol, in glycerin, and in ether; slightly soluble in chloroform. |
| Melting Range | Between 109° and 111°. |
| Loss on Drying | Not more than 1.0% |
| Residue on Ignition | Not more than 0.05% |
| Ordinary Impurities | Not more than 1.0% |
| Phenol | The odor of phenol is not perceptible. |
| Catechol | No turbidity is produced. |
| Residual Solvents | Meets the requirement |
| Assay | Not less than 99.0%and not more than 100.5% of C6H6O2, calculated on the dried basis. |
Shelf life, Storage and Packing
It should be stored in a segregated area in a cool and ventilated place away from combustible materials. Keep in a tightly closed container, sealed until ready for use. It is packed in 25kg or 50kg HDPE bags or drums as required.
Other
GLP, cGMP (FDA) Approved, ISO 9001, ISO 14001, ISO 45001, ISO 17025, ISO 22000, FSSC 22000, FSSAI, Halal and Kosher certified.
We observe WHO Good manufacturing practice and Good laboratory practice.