Selenium Sulfide Powder Shampoo (CAS 7488-56-4)

PRODUCT NAME:Selenium sulfide
CAS: 7488-56-4
APPEARANCE: Reddish brown to bright orange powder
USAGE: Shampoo manufacturing
SHELF TIME: 12 Months

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Description

Basic Product Information

Product Name

Selenium Sulfide Powder

CAS NO

7488-56-4

S2Se

COLOR

Red-brown

Product Classification & Origin

Classification: Inorganic synthetic compound (selenium-sulfur binary compound), belonging to the category of "functional active raw materials" in the cosmetics, pharmaceutical, and industrial fields.

Production Process: Typically synthesized via the reaction of elemental selenium (Se, 99.9% high-purity) and elemental sulfur (S, industrial-grade or cosmetic-grade) under controlled high-temperature conditions (300-350℃) in an inert gas environment (e.g., nitrogen), followed by cooling, crushing, and precision sieving to obtain powder with uniform particle size.

Technical Indicators (Industrial/Cosmetic Grade)

Indicator	Cosmetic Grade (for personal care)	Industrial Grade (for other applications)	Test Method
Purity (SeS₂ Content)	≥98.0%	≥95.0%	Titration (iodometric method)
Moisture Content	≤0.5%	≤1.0%	Karl Fischer method
Ash Content	≤0.3%	≤0.8%	High-temperature incineration (800℃, 2h)
Particle Size	5-20 μm (D50, median particle size)	20-50 μm (adjustable by sieving)	Laser particle size analyzer
Heavy Metal Impurities	Pb≤10 ppm; As≤5 ppm; Hg≤1 ppm	Pb≤50 ppm; As≤20 ppm	Atomic absorption spectrometry

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Applications

Selenium Sulfide Powder (CAS 7488-56-4) is widely used due to its excellent antifungal, anti-dandruff, and insecticidal properties, with key application fields as follows:

Cosmetics & Personal Care

Main Use: Active ingredient in anti-dandruff shampoos, scalp care lotions, and medicated hair products.

Function Mechanism: Inhibits the growth of Malassezia (a fungus causing dandruff) by disrupting its cell membrane structure; regulates scalp keratinization to reduce flaking.

Usage Requirements:

Cosmetic-grade powder is mandatory (meets heavy metal and purity standards); recommended addition amount in shampoos is 1.0%-2.0% (exceeds 2.0% may cause scalp irritation).

Must be uniformly dispersed in the shampoo matrix (aided by thickeners like hydroxyethyl cellulose) to avoid sedimentation and ensure consistent efficacy.

Pharmaceutical Industry

Applications: Raw material for topical antifungal medications (e.g., medicated lotions for seborrheic dermatitis, tinea versicolor).

Regulatory Standards: Complies with pharmaceutical-grade raw material specifications (e.g., USP-NF, EP, CP); purity ≥99.0%, with stricter impurity limits (e.g., heavy metals ≤5 ppm).

Usage Form: Usually formulated into 2.5% concentration lotions, for external use only (not for oral or mucous membrane application).