4,5-dibromophthalic acid
- Product Name
- 4,5-dibromophthalic acid
- CAS No.
- 24063-28-3
- Chemical Name
- 4,5-dibromophthalic acid
- Synonyms
- 1,2-Benzenedicarboxylic acid, 4,5-dibroMo-;4,5-dibromophthalic acid
- CBNumber
- CB61508376
- Molecular Formula
- C8H4Br2O4
- Formula Weight
- 323.92
- MOL File
- 24063-28-3.mol
4,5-dibromophthalic acid Property
- Melting point:
- 203.5-205.5 °C
- Boiling point:
- 448.0±45.0 °C(Predicted)
- Density
- 2.205±0.06 g/cm3(Predicted)
- storage temp.
- Sealed in dry,Room Temperature
- pka
- 2.33±0.10(Predicted)
- Appearance
- White to off-white Solid
Hazard and Precautionary Statements (GHS)
- Symbol(GHS)
-
- Signal word
- Warning
- Hazard statements
-
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
- Precautionary statements
-
P261Avoid breathing dust/fume/gas/mist/vapours/spray.
P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
N-Bromosuccinimide Price
- Product number
- HCH0049703
- Product name
- 1,2-BENZENEDICARBOXYLIC ACID,4,5-DIBROMO
- Purity
- 95.00%
- Packaging
- 5MG
- Price
- $499.44
- Updated
- 2021/12/16
- Product number
- 082032
- Product name
- 4,5-Dibromophthalic acid
- Purity
- 97%
- Packaging
- 1g
- Price
- $561
- Updated
- 2021/12/16
- Product number
- 8113AD
- Product name
- 4,5-Dibromophthalicacid
- Packaging
- 1g
- Price
- $807
- Updated
- 2021/12/16
- Product number
- CD12092775
- Product name
- 4,5-Dibromophthalicacid
- Purity
- 97%
- Packaging
- 10g
- Price
- $972
- Updated
- 2021/12/16
- Product number
- SC-54680
- Product name
- 1,2-BENZENEDICARBOXYLIC ACID,4,5-DIBROMO
- Purity
- 95
- Packaging
- 1g
- Price
- $1217
- Updated
- 2021/12/16
4,5-dibromophthalic acid Chemical Properties,Usage,Production
Synthesis
24932-48-7
24063-28-3
General procedure for the synthesis of 4,5-dibromophthalic acid from 1,2-dibromo-4,5-xylene: 6.5 g (0.025 mol) of 1,2-dibromo-4,5-xylene was added to 200 ml of water, stirred to form a suspension and heated to boiling. 15.8 g (0.1 mol) of potassium permanganate powder was divided equally into three equal parts. One portion of potassium permanganate was added to the reaction mixture every two hours for a total of 6 hours. Upon completion of the reaction, the mixture was cooled to room temperature and sodium bisulfite was slowly added to reduce the remaining potassium permanganate until the magenta completely disappeared. Subsequently, the pH of the reaction mixture was adjusted to above 12 with potassium hydroxide. The reaction mixture was filtered through a Brewer's funnel to obtain a clarified colorless filtrate of potassium 4,5-dibromophthalate. The residue was washed twice with 1% KOH solution and the washes were combined into the filtrate. The filtrate was slowly acidified with concentrated hydrochloric acid (18 M) to a pH approximately equal to 2, at which time a large amount of white flocculent 4,5-dibromophthalic acid precipitate precipitated. It was filtered through a Brinell funnel and the filter cake was washed with a small amount of 1% hydrochloric acid solution and then dried in a silica gel dryer. 7.3 g of a sparkling white solid was finally obtained in 90% yield.
References
[1] Patent: CN105541850, 2016, A. Location in patent: Paragraph 0034; 0035; 0036
[2] Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1980, p. 1834 - 1840
[3] Journal of the Chemical Society, 1952, p. 4615,4618
[4] J. Gen. Chem. USSR (Engl. Transl.), 1980, vol. 50, # 5, p. 907 - 915
[5] Zhurnal Obshchei Khimii, 1980, vol. 50, # 5, p. 1122 - 1131
4,5-dibromophthalic acid Preparation Products And Raw materials
Raw materials
Preparation Products
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