Benzophenone-4 (BP-4)
Benzophenone-4 is water-soluble.The sulfonic acid group must be neutralized with one of the usual neutralizing agents,e.g.triethanolamine,NaOH etc.Tests have shown that Benzophenone-4 stabilizes the viscosity of gels based on polyacrylic acid (Carbopol,Pemulen)when they are exposed to UV radiation.Concentrations as low as 0.1%provides good results.It is used as ultra-
violet stabilizer in wool,cosmetics,pesticides &lithographic plate coating.It must be noted that Benzophenone-4 is not compatible with Mg salts,particularly in water/oil emulsions.As
Other names:
Benzophenone-4
2-Hydroxy-4-Methoxy Benzophenone-5-Sulphonic Acid
Sulisobenzone;UV-284;BP-4
Molecular Formula:C₁4H₁₂O₆S
Molecular Weight:308.31
CAS No.:4065-45-6
EINECS No.:223-772-2
Structural Formula:
Benzophenone-4 has a yellow color,which is intensified by neutralization,it may alter the hue of coloured solutions.
2.Benzophenone-4 is a member of benzophenones.Benzophenones are used as an additive for
plastics,coatings,and adhesives.As a group,benzophenones may be used to delay photodegradation or extend shelf life in toiletries and plastic surface coatings.
|
Appearance |
Off-white to light yellow crystalline powder,free of foreign matter. |
Conform |
|
Odor |
Faintly characteristic odor |
Conform |
|
Specific Extinction |
E285:460~490 |
479 |
|
(1%,1cm) |
E325:285~315 |
296 |
|
Purity(HPLc) |
≥99.5% |
99.9% |
|
PH Value |
1.2~2.2 |
1.5 |
|
Melting Point |
≥140℃ |
176.8℃ |
|
Loss on Drying |
≤3.0% |
0.26% |
|
Turbidity in Water |
≤4.0EBC |
1.3EBC |
|
Gardner Color |
≤2.0 |
1.1 |
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