Ethylparaben
ELPROTECTTM – EPB
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A widely used preservative in cosmetics and pharmaceuticals to prevent microbial contamination.
CAS Number
120-47-8
HS Code
29182200
INCI Name
Ethyl Paraben
Molecular Formula
C₉H₁₀O₃
Ethylparaben
ELPROTECTTM – EPB
A widely used preservative in cosmetics and pharmaceuticals to prevent microbial contamination.
CAS Number
120-47-8
INCI Name
Ethyl Paraben
HS Code
29182200
Molecular Formula
C₉H₁₀O₃
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Product Specification
Physical Properties
| Property | Specification |
|---|---|
| Appearance | White powder |
| Odor | mild phenolic |
| Molecular Weight (G/Mol) | 166.17 |
| Density Or Specific Gravity | 1.1708 (rough estimate) |
| Refractive Index | 1.5286 (estimate) |
| Ph (If Aqueous Solution) | 4.5-5.5 (H2O, 20°C) |
| Ph | 4.5-5.5 (H2O, 20°C) |
Chemical Properties
| Property | Specification |
|---|---|
| Pka | 8.34 |
Thermal Properties
| Property | Specification |
|---|---|
| Melting Point | 114-117°C (lit.) |
| Boiling Point | 297-298 °C (lit.) |
Processing Methods & Reference Formulations
A. Hair Conditioner
Add parabens to the heated oil phase to ensure proper dissolution and avoid crystallization. Maintain the final pH of the hair conditioner to ensure preservative effectiveness without compromising product stability.
| Key Ingredients | Indicative Dosage (% w/w) |
|---|---|
| Cetearyl Alcohol | 5% |
| Behentrimonium Chloride | 3% |
| Dimethicone | 2% |
| Glycerin | 2% |
| Cetyl Alcohol | 2% |
| Methylparaben | 0.2% |
| Propylparaben | 0.1% |
| Water | 80% |
| Fragrance/Color, Preservative (other) | 0.2-3% |
B. Makeup foundation lotion
In makeup foundation lotion formulations, dissolve parabens (such as methylparaben and propylparaben) in the oil phase or a co-solvent like propylene glycol or ethanol to ensure complete solubility. Add them during the heating phase before emulsification for uniform dispersion. Ensure the emulsion is stable and homogeneous to support preservative efficacy. Maintain the final pH between 4.5 and 7.5, as parabens are most effective within this range.
| Key Ingredients | Indicative Dosage (% w/w) |
|---|---|
| Stearic acid | 2% |
| Cetyl alcohol | 4% |
| Paraffin liquid | 20% |
| Dimethicone | 5% |
| Tween 80 | 3.65% |
| Propylparaben | 0.02% |
| Propylene glycol | 5% |
| Xanthan gum | 0.3% |
| Methylparaben | 0.18% |
| Distilled water | 50-55% |
| Other additives |
C. Lip balm
In lip balm formulations, parabens (like methylparaben or propylparaben) should be dissolved in the melted oil or wax phase, as they are oil-soluble at elevated temperatures. Heat the oil phase to fully incorporate the parabens without degradation. Stir thoroughly to ensure even distribution throughout the balm. Since lip balms are anhydrous, use parabens primarily to protect against contamination during use and storage.
| Key Ingredients | Indicative Dosage (% w/w) |
|---|---|
| Nicotinamide | 0.05% |
| Avobenzone | 0.22% |
| Zinc oxide | 0.13% |
| Titanium dioxide | 0.10% |
| Polyglyceryl-2 triisostearate | 30% |
| Beeswax | 5.5% |
| Olive wax | 3% |
| Alkene wax | 4% |
| Castor oil | 18% |
| Liquid paraffin | 24% |
| Peppermint essential oil | 5% |
| Ethylparaben | 0.4% |
| Chrysanthemum extract | 6% |
Dosing Guidelines
A. Dosing by Application
| Products | Authorized dosage % |
|---|---|
| Cosmetic creams/Lotions | 0.1–0.4% (single), up to 0.8% (combined) |
| Hair Shampoo/Conditioner | 0.1–0.4% (single), up to 0.8% (combined) |
About Ethylparaben
About Ethylparaben
Regulatory Compliance
| Region | Max Allowed Level | Notes | Certification Body |
|---|---|---|---|
| China | 0.8% | NMPA - National Medical Products Administration | NMPA - National Medical Products Administration |
| India | 0.8% | Ethylparaben may be used up to 0.4% as a single ester and up to 0.8% total for mixtures of permitted parabens in a cosmetic product | - |
| Japan | 1% | Not specifically restricted by law, but industry follows a 1% total parabens limit | MHLW – Ministry of Health, Labour and Welfare |
| Korea, Republic of | 0.8% | MFDS - Ministry of Food and Drug Safety | MFDS - Ministry of Food and Drug Safety |
| United States | 0.8% | The FDA does not set a specific limit for ethylparaben in cosmetics. The Cosmetic Ingredient Review (CIR) panel considers use up to 0.8% (in mixtures) safe. | FDA |
| ASEAN | 0.8% | - | - |
| European Union | 0.8% | Ethylparaben and methylparaben allowed up to 0.4% each as a single ester, and 0.8% total for mixtures of permitted parabens. | SCCS (Scientific Committee on Consumer Safety) |
FAQs - Ethylparaben
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