BP-4 2018-12-21T09:25:07+00:00

UV Absorber BP-4 | CAS 4065-45-6

  • CAS No.: 4065-45-6
  • EINECS No.: 223-772-2
  • Molecular Formula: C14H12O6S

Product Information of UV Absorber BP-4 (CAS 4065-45-6)

Sulisobenzone (benzophenone-4) is an ingredient in some sunscreens which protects the skin from damage by UVB and short-wave UVA ultraviolet light. Its sodium salt, sulisobenzone sodium, is also referred to as benzophenone-5.

  • Product Name: BP-4
  • Synonyms: 2-Hydroxy-4-Methoxybenzophenone-5-Sulfonic Acid; benzophenone-4; 2-Hydroxy-4-methoxybenzophenone-5-sulfonic Acid Hydrate; Sulisobenzone Hydrate; Sulisobenzone; 5-Benzoyl-4-hydroxy-2-methoxybenzenesulfonic acid
  • Molecular Weight: 308.306 g/mol
  • Storage Condition: Preserve under tight and light-resistant condition
  • Package: 25kg fiber drum or cartons
  • Category: Benzophenone

Product specifications of BP-4 (CAS 4065-45-6)

Appearance Off white powder
Assay(HPLC) ≥99.0%
Melting Point 160.0°C
Volatiles ≥2.00%
PH 1.2-2.2
Specific Extinction (1%,1cm) E285nm≥460; E325nm≥290
Loss on Drying ≤2.0%
Gardner Color ≤4.0
Heavy Metals ≤20 ppm
Turbidity ≤16.0 NTU

Applications of BP-4 (CAS 4065-45-6)

  1. BP-4 s a broad absorption UV absorber that is effective in the 280 – 360 nm range.
  2. BP-4 is soluble water, the acid group need to be o be neutralized with one of the usual neutralizing agents, eg. triethanolamine and NaOH.
  3. BP-4 is approved for skin care, it is widely used in sun preparations.
  4. BP-4 can also be used in water borne coatings, water dyes and detergent to improve the weather ability.

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