Hot selling benzophenone-4 (BP-4) powder cas 4065-45-6

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Products Description

Name: Benzophenone-4 powder

Cas: 4065-45-6

Purity: 99%min


Basic Info:

CAS No.:






Stock Availability

In stock

Brand Name

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Product Introduction:

Benzophenone-4 (BP-4) belongs to the benzophenone family of compounds. It is a white or pale yellow powder at room temperature that can effectively absorb UV rays of 285~325Im. Broadband UV absorbers are widely used in sunscreen creams, honey, lotions, oils and other cosmetics.

Sunscreen is generally applied to the surface of the skin and has a sunblock effect that protects the skin. Benzophenone-4 (BP-4) is widely used in sunscreen cosmetics such as sunscreen cream, cream, honey, lotion, and oil because of its good stability to light and heat.

Product Nature:

  • Melting point: 170°C
  • Density: 1.4574(roughestimate)
  • Refractive index: 1.5300(estimate)
  • Storage conditions: Inertatmosphere, RoomTemperature
  • Acidity coefficient: (pKa)-0.70±0.50(Predicted)


Product NameBenzophenone-4 (BP-4) powder
CAS No.34065-45-6
Appearance White powder
Content99% min
Shelf Life2 years
Packing1kg/bag,25kg/bag or as your requirements


  • Benzophenone-4 (BP-4) is a benzophenone-based ultraviolet absorber, which mainly targets ultraviolet rays in the 280nm-360nm band. It is easily soluble in water, and the aqueous solution is acidic, so it needs to be neutralized during use.
  • If the pH of the solution is greater than 9, it will narrow the absorption wavelength. It is mainly used in daily sunscreen and other skin care products to prevent skin aging caused by ultraviolet rays. It can also be used in water-based paints, dyes, and washing products.

Product function:

  • Benzophenone-4 is mainly used as sunscreen and sunscreen in water-soluble cosmetics, and also as ultraviolet absorber in other water-soluble inks and coatings.
  • Benzophenone-4 is a broad-spectrum ultraviolet absorber, which has the advantages of high absorption efficiency, non-toxic, no teratogenic side effects, and good light and thermal stability. It can absorb UV-A and UV-B at the same time. FDA-approved type I sunscreen, used more frequently in the United States and Europe
  • Benzophenone-4 is widely used as an anti-ultraviolet finishing agent in sunscreen cosmetics such as sunscreen creams, creams, honeys, lotions, oils, and has good anti-aging and softening effects on cotton fabrics and polyester fibers.

Knowledge supplement:

UV absorber effect

  • Ultraviolet absorber is a kind of light stabilizer, which can absorb the ultraviolet part of sunlight and fluorescent light source without changing itself.
  • Since the sun’s rays contain a large amount of ultraviolet light that is harmful to colored objects, the wavelength is about 290-460 nanometers. These harmful ultraviolet light through chemical redox reaction (Redox reaction), make the color molecules finally decompose and fade.
  • There are both physical and chemical methods to prevent harmful ultraviolet light from damaging colors.
    Here is only a brief introduction to chemical methods, that is, the use of ultraviolet absorbers to effectively prevent or weaken the damage to the color of the protected object.


  1.  Williams, D. B. G.; Lawton, M. (2010). “Drying of Organic Solvents: Quantitative Evaluation of the Efficiency of Several Desiccants”. The Journal of Organic Chemistry75 (24): 8351–4. doi:10.1021/jo101589hPMID 20945830.
  2. ^ Armarego, W. L. F.; Chai, C. (2003). Purification of laboratory chemicals. Oxford: Butterworth-Heinemann. ISBN 978-0-7506-7571-0.
  3. Wikipedia


Pre-Sales Service

* Fast response and 24 hours online, we will have a professional team to provide you with the most favorable prices and high-quality products.

* Support sample testing and inspection.

* Each batch of products will be inspected to ensure its quality.

* The packaging can also be made and adjusted according to customer requirements.

* All questions will be answered by us within 24 hours.

* We will provide you with commercial invoice, packing list, bill of lading, COA, health certificate and certificate of origin. If you have any special requirements in the market, please let us know.


After-Sales Service

* Real-time monitoring of logistics information.

* Any questions about the product can be consulted at any time, and we will get in touch with you in the shortest possible time.

* If there is a problem with the product, you can report it to us, we will deal with it for you as soon as possible, and the product can be returned.


1. ≤50kg, we recommend express delivery, commonly known as DDU service;

2. ≤500kg, we recommend air transportation, generally referred to as FOB, CFR or CIF service;

3.> 500 kg, we suggest sea transportation, generally referred to as FOB, CFR or CIF service;

4. For high-value products, please choose air transport and express delivery to ensure the safety of transported products.


Do you accept sample order?

We will make samples before mass production. After the samples are approved and approved by customers, we will start mass production. During the production process, we will conduct 100% inspection of the products, and then conduct random inspections before packaging.

How to confirm whether the product quality meets the requirements before placing an order?

You can consult us to get samples of some products for free, you only need to pay the freight or arrange express delivery to get the samples. You can send us your product specifications and requirements, and we will produce products according to your requirements.

What’s your MOQ?

Our MOQ is 1kg. But we can usually accept smaller quantities, such as 100 grams, provided that the sample fee is paid 100%.

Do you supply product report?

Yes. We’ll give you product analysis report before shipping.

  Is there a discount?

Different quantity has different discount.

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