Description

2,2'-Dihydroxy-4,4'-Dimethoxy-5-Sulfobenzophenone Sodium Salt is a high-purity, water-soluble benzophenone derivative widely recognized for its exceptional UV absorption properties. This compound matters for formulators seeking a highly effective and photostable ultraviolet light absorber for demanding applications. It is primarily needed by manufacturers in the cosmetics, personal care, and specialty coatings industries to protect products from degradation caused by sunlight exposure.

Application

• Primary UV Absorber in sunscreens, daily moisturizers, and anti-aging skincare formulations.
• Light Stabilizer for hair care products (sprays, gels) and decorative cosmetics (lipsticks, foundations).
• Polymer Additive to enhance the weatherability and longevity of plastics, coatings, and adhesives.
• Industrial Coating Component in automotive, aerospace, and architectural finishes for UV protection.
• Photostabilizer in packaging materials to prevent content degradation from light exposure.
• Research & Development chemical for developing new photoprotective materials and studying UV filter mechanisms.

Basic Information

Product Name	2,2'-Dihydroxy-4,4'-Dimethoxy-5-Sulfobenzophenone Sodium Salt
CAS No.	3121-60-6
Molecular Formula	C15H13NaO8S
Molecular Weight	376.31 g/mol
Synonyms	Benzophenone-9; BP-9; Uvinul MS-40; 5-Sulfo-2-hydroxy-4-methoxybenzophenone Sodium Salt; 2-Hydroxy-4-methoxy-5-sulfobenzophenone Sodium Salt; Sodium 2,2'-Dihydroxy-4,4'-dimethoxy-5-sulfobenzophenone; Sulisobenzone Sodium; Eusolex 232
EINECS	221-518-5

Quality Control

Our 2,2'-Dihydroxy-4,4'-Dimethoxy-5-Sulfobenzophenone Sodium Salt is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets the high-purity standards required for cosmetic and industrial applications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to guarantee consistency and traceability.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the original container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Light yellow to yellow powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
pH (1% Solution)	7.0 - 9.0
UV Absorption (λ max)	Conforms

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.