1,4-DIBROMO-2,3,5,6-TETRAMETHYLBENZENE

Product Name: 1,4-DIBROMO-2,3,5,6-TETRAMETHYLBENZENE
CAS No.: 1646-54-4
Chemical Name: 1,4-DIBROMO-2,3,5,6-TETRAMETHYLBENZENE
Synonyms: Dibromodurene;1,4-Dibromodurene;3,6-Dibromodurene;6-TETRAMETHYLBENZENE;1,4-Dibromotetramethylbenzene;1,2,4,5-Tetramethyl-3,6-dibromobenzene;1,4-DIBROMO-2,3,5,6-TETRAMETHYLBENZENE;3,6-Dibromo-1,2,4,5-tetramethylbenzene;4,6-Dibromo-1,2,4,5-tetramethylbenzene;Benzene,1,4-dibroMo-2,3,5,6-tetraMethyl-
CBNumber: CB4683764
Molecular Formula: C10H12Br2
Formula Weight: 292.01
MOL File: 1646-54-4.mol

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1,4-DIBROMO-2,3,5,6-TETRAMETHYLBENZENE Property

Melting point:: 202-204 °C
Boiling point:: 307.7±37.0 °C(Predicted)
Density: 1.562±0.06 g/cm3(Predicted)
storage temp.: Sealed in dry,Room Temperature
solubility: soluble in Toluene
form: powder to crystal
color: White to Almost white
EPA Substance Registry System: Benzene, 1,4-dibromo-2,3,5,6-tetramethyl- (1646-54-4)

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Safety

TSCA: TSCA listed
HS Code: 2903.99.8001

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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.

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P271Use only outdoors or in a well-ventilated area.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P302+P352IF ON SKIN: wash with plenty of soap and water.

P304+P340IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P330Rinse mouth.

P403+P233Store in a well-ventilated place. Keep container tightly closed.

P405Store locked up.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: S706760
Product name: 1,4-DIBROMO-2,3,5,6-TETRAMETHYLBENZENE
Purity: Aldrich<sup>CPR</sup>
Packaging: 1 unit
Price: $197
Updated: 2026/04/30

Sigma-Aldrich

Product number: S706760
Product name: 1,4-DIBROMO-2,3,5,6-TETRAMETHYLBENZENE
Purity: AldrichCPR
Packaging: 50MG
Price: $179
Updated: 2024/03/01

TCI Chemical

Product number: D5168
Product name: 1,4-Dibromo-2,3,5,6-tetramethylbenzene
Packaging: 1G
Price: $43
Updated: 2026/04/30

TCI Chemical

Product number: D5168
Product name: 1,4-Dibromo-2,3,5,6-tetramethylbenzene
Packaging: 5G
Price: $142
Updated: 2026/04/30

TRC

Product number: D448358
Product name: 3,6-Dibromodurene
Packaging: 1g
Price: $100
Updated: 2021/12/16

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1,4-DIBROMO-2,3,5,6-TETRAMETHYLBENZENE Chemical Properties,Usage,Production

Synthesis

95-93-2

1646-54-4

1. 1,2,4,5-tetramethylbenzene (25.0 g, 0.18 mol) and 150 mL of methylene chloride were added to a dry three-necked flask with stirring until completely dissolved. 2. Iodine (I2, 1.0 g, 3.94 mmol) was added to the solution as a catalyst. 3. Under stirring, bromine (Br2, 24 mL, 74.6 g, 0.47 mol) dissolved in a 100 mL of dichloromethane. 4. After the dropwise addition was completed, the reaction mixture was heated to reflux and held for 1.5 h. 5. After the reaction was completed, it was cooled to room temperature and the reaction was quenched by the addition of 5 M aqueous sodium hydroxide (50 mL). 6. The solid product was collected by filtration, washed with deionized water, and dried to afford 1,4-dibromo-2,3,5,6-tetramethylbenzene in 93% yield ( The product was characterized by 1H NMR (500 MHz, CDCl3) and 13C NMR (125.68 MHz, CDCl3): 1H NMR δ 2.48 (s, 12H); 13C NMR δ 135.2, 128.3, 22.4. 8. The 1H NMR spectrum and structure of the product are shown in Figure 1.

References

[1] Patent: KR2015/112649, 2015, A. Location in patent: Paragraph 0110-0112
[2] Patent: US2011/130593, 2011, A1. Location in patent: Page/Page column 6
[3] Angewandte Chemie - International Edition, 2016, vol. 55, # 9, p. 3049 - 3053
[4] Angew. Chem., 2016, vol. 128, # 9, p. 3101 - 3105,5
[5] Bulletin of the Chemical Society of Japan, 1989, vol. 62, # 2, p. 439 - 443

1,4-DIBROMO-2,3,5,6-TETRAMETHYLBENZENE Preparation Products And Raw materials

Raw materials

Preparation Products

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1,4-DIBROMO-2,3,5,6-TETRAMETHYLBENZENE Suppliers

Americas 1 China 85 Europe 1 India 3 Japan 1 The Netherlands 1 United States 6 Global 98

Energy Chemical

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View Lastest Price from 1,4-DIBROMO-2,3,5,6-TETRAMETHYLBENZENE manufacturers

Shanghai UCHEM Inc.

Product: 1,4-Dibromo-2,3,5,6-tetramethylbenzene 1646-54-4
Price: US $8.00-119.00/g
Min. Order: 5g
Purity: 0.98
Supply Ability: 25kg
Release date: 2024-04-12

Career Henan Chemical Co

Product: 1,4-DIBROMO-2,3,5,6-TETRAMETHYLBENZENE 1646-54-4
Price: US $0.01/KG
Min. Order: 1KG
Purity: 98%； 99%
Supply Ability: 1kg; 5kg; 10kg；25kg
Release date: 2020-01-07

1646-54-4, 1,4-DIBROMO-2,3,5,6-TETRAMETHYLBENZENERelated Search:

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1,4-DIBROMO-2,3,5,6-TETRAMETHYLBENZENE

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1,4-Dibromotetramethylbenzene

4,6-Dibromo-1,2,4,5-tetramethylbenzene

3,6-Dibromo-1,2,4,5-tetramethylbenzene

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6-TETRAMETHYLBENZENE

1646-54-4