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18959-30-3

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18959-30-3 Usage

General Description

4,5-Difluorophthalic anhydride is a chemical compound with the molecular formula C8H2F2O3. It is a white solid with a high melting point and is insoluble in water. It is commonly used in the production of high-performance polymers, such as polyimides, and as a precursor in the synthesis of various specialty chemicals. Due to its strong electron-withdrawing fluorine atoms, 4,5-Difluorophthalic anhydride is valuable for its ability to enhance the thermal and chemical resistance of polymers, making it an important building block for advanced materials used in electronics, aerospace, and other demanding industries. However, it should be handled with care as it can be a severe irritant to the eyes, skin, and respiratory system.

Check Digit Verification of cas no

The CAS Registry Mumber 18959-30-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,8,9,5 and 9 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 18959-30:
(7*1)+(6*8)+(5*9)+(4*5)+(3*9)+(2*3)+(1*0)=153
153 % 10 = 3
So 18959-30-3 is a valid CAS Registry Number.
InChI:InChI=1/C8H2F2O3/c9-5-1-3-4(2-6(5)10)8(12)13-7(3)11/h1-2H

18959-30-3 Well-known Company Product Price

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  • TCI America

  • (D4716)  4,5-Difluorophthalic Anhydride  >98.0%(GC)(T)

  • 18959-30-3

  • 1g

  • 850.00CNY

  • Detail
  • TCI America

  • (D4716)  4,5-Difluorophthalic Anhydride  >98.0%(GC)(T)

  • 18959-30-3

  • 5g

  • 3,450.00CNY

  • Detail

18959-30-3SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 11, 2017

Revision Date: Aug 11, 2017

1.Identification

1.1 GHS Product identifier

Product name 5,6-difluoro-2-benzofuran-1,3-dione

1.2 Other means of identification

Product number -
Other names 4,5-difluoro-phthalic acid anhydride

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:18959-30-3 SDS

18959-30-3Relevant articles and documents

High-efficiency synthesis method of halogenated 1, 3-indanedione compound

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Paragraph 0028-0030, (2020/08/09)

The invention relates to the technical field of new material synthesis, in particular to a novel efficient synthesis method of an organic photoelectric intermediate material. The method is characterized in that the synthesis technology is simple, efficient, easy to operate and good in repeatability. The specific synthesis details are as follows: halogenated phthalic acid which is very easy to obtain in industry is used as a raw material, and a corresponding anhydride is obtained after dehydration treatment; different acid anhydrides are reacted with ethyl acetoacetate or tert-butyl acetoacetate at room temperature, and then carboxyl is mildly removed in a hydrochloric acid aqueous solution to obtain the halogenated 1, 3-indanedione compound. Simple and efficient synthesis of the organic intermediates is achieved through the method, synthesis raw materials are easy to obtain, the synthesis process is simple, the path is short, and the synthesis cost is greatly reduced.

Intermediates in the preparation of 4,5-difluoroanthranillic acid

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, (2008/06/13)

Compounds of the formula STR1 which are intermediates in the preparation of 4,5-difluoroanthranilic acid, an intermediate itself in the synthesis of quinolone antibacterials, and methods of preparing these intermediates.

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