Methylparaben, also methyl paraben, one of the parabens, is a preservative with the chemical formula CH3(C6H4(OH)COO). It is the methyl ester of p-hydroxybenzoic acid.
+91 79 26608012/13/14
+91 79 26608012/13/14
Methylparaben, also methyl paraben, one of the parabens, is a preservative with the chemical formula CH3(C6H4(OH)COO). It is the methyl ester of p-hydroxybenzoic acid.
| Product Name : | METHYL PARABEN IP |
| Chemical Formula : | C8H8O3 |
| Molecular Weight : | 152.15 |
| CAS No. : | 99-76-3 |
| Storage : | Store in a well-closed containers. |
| Retest Period : | 5 years from manufacture. |
| Applications / Uses : |
| Sr No | Test | Specifications |
| 1 | Description | Colorless crystals or white, crystalline powder. |
| 2 | Solubility | Very slightly soluble in water, freely soluble in alcohol and in methanol |
| 3 | Identification | A. Infrared absorption spectrophotometery B. Absorption at 258 nm, 0.52 to 0.56. C. A reddish violet colour is produced. D. A precipitate is formed and the supernant liquid becomes red. |
| 4 | Appearance of solution | A 10.0 per cent w/v solution in ethanol (95 % w/v ) and not more Intensely colored than reference solution BYS6 |
| 5 | Acidity | Not more than 0.1 ml of 0.1 M sodium hydroxide is required to change the colour of the solution. |
| 6 | Related substances | By thin layer chromatography |
| 7 | Chlorides | Not more than 500 ppm. |
| 8 | Sulphates | No turbidity is produced within 10 Minutes |
| 9 | Sulphated Ash | Not more than 0.1 %. |
| 10 | Assay. | Not less than 99.0 per cent and not more than 101.0 per cent of C8H8O3 |
| Product Name : | METHYL PARABEN BP |
| Chemical Formula : | C8H8O3 |
| Molecular Weight : | 152.14 |
| CAS No. : | 99-76-3 |
| Storage : | Store in a well-closed containers. |
| Retest Period : | 5 years from manufacture. |
| Applications / Uses : |
| Sr No | Test | Specifications |
| 1 | Description | White, crystalline powder or colorless crystals. |
| 2 | Solubility | Very slightly soluble in water, freely soluble in alcohol and in methanol. |
| 3 | Identification | A) Melting Point: 1250 C to 1280 C. B) Infrared absorption spectrophotometry C) Thin layer chromatography D) Solution B is yellow to orange-brown. Solution A is orange to red, the color being clearly more intense than any similar color, which may be obtained with soln. B. |
| 4 | Appearance of solution | Solution S is clear and not more intensely colored than ref. solution BY6 |
| 5 | Acidity | NMT 0.1 ml of 0.1 M NaOH is required to change the color of the indicator to blue. |
| 6 | Related substances | TLC—Any spot in the chromatogram obtained with test solution (a), apart from the principal spot, is not more intense than the spot in the chromatogram obtained with reference solution (a) (0.5 per cent). |
| 7 | Sulphated Ash | Maximum 0.1 per cent, determined on 1.0 g. |
| 8 | Assay | 98.0 % to 102.0 % w/w |
| Product Name : | METHYL PARABEN USP |
| Chemical Formula : | C8H8O3 |
| Molecular Weight : | 152.15 |
| CAS No. : | 99-76-3 |
| Storage : | Preserve in a well-closed containers. |
| Retest Period : | 5 years from manufacture. |
| Applications / Uses : |
| Sr No | Test | Specifications |
| 1 | Description | White, crystalline powder or colorless crystals. |
| 2 | Solubility | Very slightly soluble in water; freely soluble in alcohol and in ether; slightly soluble in boiling water. |
| 3 | Identification | A: Infrared absorption B. Melting range : Between 125° to 128° |
| 4 | Color of solution | To comply the test |
| 5 | Acidity | Not more than 0.1 mL 0.10 N sodium hydroxide is required to produce a blue color. |
| 6 | Residue on ignition | Not more than 0.1% determined on 1.0g. |
| 7 | Related substances | By thin layer chromatography |
| 8 | Residual solvent | Meets the requirements. |
| 9 | Assay | Not less than 98.0% and not more than 102.0% of C8H8O3. |
| Product Name : | METHYL PARABEN E218 |
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| Sr No | Test | Specifications |
| 1 | Description | Almost odourless, small colourless crystals or white crystalline powder. |
| 2 | Identification a)Tests for p-hydroxy benzoate b)Melting Range | Positive tests. 125 °C to 128 °C. |
| 3 | Loss on Drying | Not more than 0.5 %, after drying for two hours at 80 °C. |
| 4 | Sulphated ash | Not more than 0.05 %. |
| 5 | p-Hydroxybenzoic acid and Salicylic acid | Not more than 0.35 % expressed as p-hydroxybenzoic acid. |
| 6 | Arsenic | Not more than 3 mg/kg. |
| 7 | Lead | Not more than 5 mg/kg. |
| 8 | Mercury | Not more than 1 mg/kg. |
| 9 | Heavy Metals (as Pb) | Not more than 10 mg/kg. |
| 10 | Assay | Not less than 99 % after drying for two hours at 80 °C. |
| Product Name : | METHYL PARABEN FCC |
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| Sr No | Test | Specifications |
| 1 | Description | Small colorless crystals or as a white, crystalline powder. |
| 2 | Solubility | Very slightly soluble in water, slightly soluble in glycerin and fixed oils, freely soluble in ether and alcohol. |
| 3 | Identification 1) Melting point of p-hydroxy benzoic acid | 1) Melting point is 212 0C to 217 0C. |
| 4 | Lead | Not more than 2 mg/kg. |
| 5 | Acidity | To comply the test. |
| 6 | Loss on Drying | Not more than 0.5 % w/w. |
| 7 | Melting Range | Between 125 0C to 128 0C. |
| 8 | Residue on Ignition | Not more than 0.05 % w/w. |
| 9 | Assay | Not less than 99.0 % w/w of and not more than 100.5 % w/w of C8H8O3, calculated on the dried basis. |
| Product Name : | METHYL PARABEN EP |
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