Description

Sodium Benzoyloxybenzene-4-Sulfonate is the sodium salt of a key benzophenone derivative, valued for its role as a versatile intermediate and functional additive. This compound is particularly significant for its ability to impart specific chemical properties in advanced formulations. It is essential for manufacturers and R&D teams in the pharmaceutical, personal care, and specialty chemical industries seeking reliable, high-purity building blocks.

Application

• Pharmaceutical Intermediate: Used in the synthesis of active pharmaceutical ingredients (APIs), particularly those requiring a benzophenone sulfonate moiety.
• UV Absorber / Light Stabilizer Precursor: Serves as a key intermediate in the production of organic UV filters and stabilizers for coatings and polymers.
• Personal Care Formulations: Acts as a functional ingredient or intermediate in sunscreen agents and other cosmetic products.
• Polymer & Resin Modification: Employed to introduce sulfonate groups for enhancing solubility, dyeability, or other physical properties of polymers.
• Chemical Synthesis: Utilized as a building block in organic synthesis for creating more complex molecules in agrochemical and material science research.
• Photographic Chemicals: Can function as a specialty chemical in certain photographic developer or sensitizer formulations.

Basic Information

Product Name	Sodium Benzoyloxybenzene-4-Sulfonate
CAS No.	66531-87-1
Molecular Formula	C13H9NaO5S
Molecular Weight	300.26 g/mol
Synonyms	4-(Benzoyloxy)benzenesulfonic Acid Sodium Salt; Sodium 4-Benzoyloxybenzenesulfonate; Benzophenone-4 Sulfonate Sodium Salt; 2-Hydroxy-4-methoxybenzophenone-5-sulfonic Acid Sodium Salt (related compound); BP-4 Sodium Salt; Uvinul MS-40 Sodium Salt; Sulisobenzone Sodium; 4-Benzoyloxyphenylsulfonic Acid Sodium Salt
EINECS	Contact for details

Quality Control

Our Sodium Benzoyloxybenzene-4-Sulfonate is produced under a stringent quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and impurity profiles. Certificates of Analysis (COA) documenting results for assay, related substances, and other critical parameters are available upon request, supporting compliance in regulated applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Related Substances (HPLC)	Total impurities ≤ 2.0%
pH (5% solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm

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