The chemical substance corresponding to CAS 35285-68-8 is sodium ethylparaben (also known as sodium ethyl p-hydroxybenzoate or sodium hydroxyethylparaben), a sodium salt derivative of the paraben ester class of preservatives, commonly used as a water-soluble broad-spectrum preservative component.

1. Basic Identification Information
Chinese Alternative Names: Sodium ethylparaben, Sodium hydroxyethylparaben
English Name: Sodium ethyl p-hydroxybenzoate
EINECS number: 252-487-6
Molecular formula: C₉H₉NaO₃
Molecular weight: 188.16

 
II. Core Physical and Chemical Properties
Appearance: White or off-white hygroscopic crystalline powder
Density: 1.34 (at 20°C)
Melting point: >115°C (calculated as free ester)
Boiling point: 297°C (free ester state under atmospheric pressure, accompanied by decomposition)
Flash point: 121°C
Water solubility: 1000 g/L (23°C), aqueous solution is alkaline with a pH of approximately 10 (1 g/L, 20°C)
Storage conditions: Store sealed in a cool, dry environment at 15~25°C

 
III. Main Application Areas
As a safe and efficient water-soluble broad-spectrum preservative, it can inhibit the activity of Gram-positive and Gram-negative bacteria, yeast, and molds
Extensively used in the pharmaceutical industry: preparation of Chinese herbal medicines and traditional Chinese patent medicines and simple preparations, sterilization and preservation of medical devices
Food Industry: Preservation and Freshness of Dairy Products, Pickled Foods, Beverages, Pastries, and Other Food Items
Preservation scenarios for cosmetics, textile industry, feed, and daily industrial products

 
IV. Safety-related Instructions
It belongs to the paraben ester derivatives, exhibiting low acute toxicity with an oral LD₅₀ of 2500 mg/kg in mice
GHS classification as Severe Eye Damage (Category 1). Contact with the eyes may cause severe and irreversible harm. Protective equipment must be worn during handling
Not classified as hazardous chemicals, it is compliant in conventional industrial usage scenarios

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Sodium Ethylparaben CAS 35285-68-8 (Sodium Ethyl 4-hydroxybenzoate,EM215)
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