B-CAP
tetraethyl 2,2'-(1,4-phenylenedimethylidyne)bismalonate
CAS: 6337-43-5
Molecular Formula: C22H26O8
B-CAP - Names and Identifiers
| Name | tetraethyl 2,2'-(1,4-phenylenedimethylidyne)bismalonate |
| Synonyms | B-CAP Hostavin B-CAP Einecs 228-726-5 tetraethyl 2,2'-(1,4-phenylenedimethylidyne)bismalonate α,α'-Bis(ethoxycarbonyl)-1,4-benzenedipropenoic acid diethyl ester Propanedioic acid, 2,2'-(1,4-phenylenedimethylidyne)bis-, tetraethyl ester [2,2'-(1,4-Phenylene)bis(ethene)]-1,1,1',1'-tetracarboxylic acid tetraethyl ester Propanedioic acid, 2,2'-(1,4-phenylenedimethylidyne)bis-, 1,1',3,3'-tetraethyl ester |
| CAS | 6337-43-5 |
| EINECS | 228-726-5 |
B-CAP - Physico-chemical Properties
| Molecular Formula | C22H26O8 |
| Molar Mass | 418.44 |
| Density | 1.195 |
| Melting Point | 136-137℃ |
| Boling Point | 484.4±45.0 °C(Predicted) |
B-CAP - Introduction
tetraethyl 2,2 '-(1,4-phenylenedimethylidyne)bismalonate, also known as hydroquinone phenolic resin, is a commonly used organic ultraviolet absorber. The following is a description of its nature, use, preparation and safety information:
Nature:
-Appearance: White or light yellow powdery substance.
-Molecular formula: C14H10O2.
-Molecular weight: 210.22g/mol.
-Melting point: 168-171 ℃.
-Solubility: Good solubility in ketones, alcohols and aromatic hydrocarbon solvents.
Use:
-Ultraviolet absorber: Due to its ability to absorb ultraviolet rays, it is often used in sunscreen products, which can effectively absorb UV-A and UV-B ultraviolet rays and protect the skin from ultraviolet rays.
-Photosensitizer: In the fields of photography, printing, etc., it can be used as a photosensitizer to improve the photosensitive performance of the product.
Preparation Method:
The Main synthesis method is to obtain diphenol phenolic resin through the condensation reaction of diphenol and p-tolualdehyde. The specific synthetic route includes the reaction of diphenol with formaldehyde to form a diphenol formaldehyde condensate, and then the condensation reaction under acidic conditions to form a diphenol phenolic resin.
Safety Information:
-Contact with eyes, skin and respiratory tract may cause irritation and direct contact should be avoided.
-Use should be careful to avoid inhalation of dust.
-Storage should be sealed to avoid contact with oxidants.
-Avoid fire or high temperature during use and storage.
it should be noted that the information provided above is for reference only, and the specific nature, use and safety information should also refer to the relevant technical data and experimental operation guidance. In the use of chemicals, Please strictly comply with the laboratory safety practices.
Nature:
-Appearance: White or light yellow powdery substance.
-Molecular formula: C14H10O2.
-Molecular weight: 210.22g/mol.
-Melting point: 168-171 ℃.
-Solubility: Good solubility in ketones, alcohols and aromatic hydrocarbon solvents.
Use:
-Ultraviolet absorber: Due to its ability to absorb ultraviolet rays, it is often used in sunscreen products, which can effectively absorb UV-A and UV-B ultraviolet rays and protect the skin from ultraviolet rays.
-Photosensitizer: In the fields of photography, printing, etc., it can be used as a photosensitizer to improve the photosensitive performance of the product.
Preparation Method:
The Main synthesis method is to obtain diphenol phenolic resin through the condensation reaction of diphenol and p-tolualdehyde. The specific synthetic route includes the reaction of diphenol with formaldehyde to form a diphenol formaldehyde condensate, and then the condensation reaction under acidic conditions to form a diphenol phenolic resin.
Safety Information:
-Contact with eyes, skin and respiratory tract may cause irritation and direct contact should be avoided.
-Use should be careful to avoid inhalation of dust.
-Storage should be sealed to avoid contact with oxidants.
-Avoid fire or high temperature during use and storage.
it should be noted that the information provided above is for reference only, and the specific nature, use and safety information should also refer to the relevant technical data and experimental operation guidance. In the use of chemicals, Please strictly comply with the laboratory safety practices.
Last Update：2024-04-10 22:29:15
