Sodium Methyl Paraben IP / BP / USP
| Chemical Name | Sodium Methyl Paraben |
| IUPAC Name | Sodium 4-(Methoxycarbonyl)phenoxide |
| Molecular Formula | C8H7NaO3 |
| Molecular Weight | 174.14 |
| CAS Number | 5026-62-0 |
Technical Data Sheet
| Sr. No. | Parameter | Specification | Method |
| 1 | Description | A white or almost white crystalline powder, odorless , hygroscopic | By Visual Inspection |
| 2 | Solubility | Freely soluble in water; sparingly soluble in ethanol (96 %), practically insoluble in MDC. | By Solubility Test |
| 3 | Identification | A) Melting point: 125oC to 128oC B) IR: positive C) TLC Chromatogram Spot: To Comply D) Should give reaction of sodium E) A platinum wire dipped in the Sample solution of Ignited residue, imparts an intense, persistent yellow color to a nonluminous flame. |
By Melting Point Apparatus By IR By TLC By Chemical Analysis By Chemical Analysis |
| 4 | Appearance of Solution | Solution S should be clear & note more intensely coloured than BY6 solution. | By Visual Inspection |
| 5 | pH | 9.5 to 10.5 | By Chemical Analysis |
| 6 | Chlorides | NMT 350 ppm | By Chemical Analysis |
| 7 | Sulphate | NMT 300 ppm | By Chemical Analysis |
| 8 | Completeness of Solution | 1 g of Methyl Paraben Sodium dissolved in water | By Chemical Analysis |
| 9 | Assay By HPLC (on anhydrous basis) | 95.0% TO 102.0% | By HPLC |
| 10 | Water | Not more than 5.0% | By Chemical Analysis |
| 11 | Heavy metal – B.P | NMT 10 ppm | By Chemical Analysis |
| 12 | RS by HPLC 1 )4-hydrobenzoic acid 2)Unspecified Impurities 3)Total impurities (Other than 4-hydrobenzoic acid) |
NMT 3.0 % NMT 0.5 % NMT 1.0% |
By HPLC |
Note:
- Standard Packing Available in 20/25 Kg Fiber Drums.
- Self-life: 5 Years from mfg. date
- Storage: Store Protected from light.
- Application: use as a preservative in food, cosmetics, and pharmaceuticals to increase shelf life and avoid bacterial and fungal growth.