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    Home > Catalyst and Auxiliary > Fluorescent Brightener > Fluorescent Brightener 367
    Fluorescent Brightener 367 structure

    Fluorescent Brightener 367

    • CAS No:

      5089-22-5

    • Formula:

      C24H14N2O2

    • Synonyms:

      KCB; B-KCB; FBA 367; Optical Brightener 367; Dibenzoxazoyl Naphthalene; Fluorescent Brightener 367; Fluorescent Brightener KCB; Opticalbrighteningagentkcbc.I.; 1,4-Bis-Benzoxazolyl-Naphthalene; 1,4-Bis(2-Benzoxazolyl)Napthalene

    • China Export:

      From 2018.11 to 2019.11, total export volume of Fluorescent Brightener 367 from China was 44,249,394KG while total export value was $238,692,109. The biggest proportion of exporting volume in the last 12 months was 10.72% in 2019.05.

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    Basic Attributes

    • 5089-22-5

    • C24H14N2O2

    • 362.38000

    • 362.10600

    • 52.06000

    • 6.2

    • 613-200-3

    • WFYSPVCBIJCZPX-UHFFFAOYSA-N

    • 4

    • 0

    • 0.00

    • 2

    Characteristics

    • 1.32 g/cm3

    • 210-212ºC

    • 521.9ºC at 760 mmHg

    • 263.1ºC

    • 1.731

    • H2O: insoluble

    Safety Information

    • 3204200000

    • S24/25

    • P273, P501

    • H413

    Product Usage

    Fluorescent brightener 367 is mainly used for the whitening of synthetic fibers and plastic products. It has a significant effect of increasing the gorgeousness of colored plastic products. It is also used for PE, PP, PVC, PS, ABS, etc.

    Production Methods

    Preparation of 1, 4-bis(benzoxazol-2'-yl)naphthalene in the Closed System; 0.71 g (3.3 mmol) of naphthalene-1, 4-dicarboxylic acid and 0.81 g (7.4 mmol) of o-aminophenol were suspended in 2.4 g of N-methylpyrrolidone in a pressure-resistant glass cuvette with stirring. The ammonium salt-containing suspension thus prepared was, after adding 169 mul of titanium tetrabutoxide, exposed to microwave irradiation of 300 W in the cuvette sealed pressure-tight with stirring and external cooling for 15 min. A temperature of approx. 225 C. measured by means of IR sensor was attained, and the pressure rose to nearly 20 bar. Subsequently, the reaction mixture was cooled to room temperature within 10 minutes, in the course of which the product crystallized out in the form of yellowish needles. The conversion based on naphthalene-1, 4-dicarboxylic acid was 83%. After filtration, washing of the crystals with ethanol, extraction of residual acid by stirring with alcoholic sodium hydroxide solution and drying, 1, 4-bis(benzoxazol-2'-yl)naphthalene was obtained with more than 99.5% purity. A further 15-minute microwave irradiation of the mother liquor which has been dried to remove water of reaction and consists essentially of solvent and unconverted reactants afforded a further 14% conversion (based on the amount of naphthalene-1, 4-dicarboxylic acid originally used).

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    China Fluorescent Brightener 367 Export Data

    Data referenced from General Administration of Customs,P.R.China

    2018.11-2019.11 China - America  Fluorescent Brightener 367 Export Data

    From 2018.11 to 2019.11, total export volume of Fluorescent Brightener 367 from China to America was 472,648KG while total export value was $11,665,288. The biggest proportion of exporting volume in the last 12 months was 14.58% in 2018.11.

    2018.11-2019.11 China Fluorescent Brightener 367 Export Data

    From 2018.11 to 2019.11, total export volume of Fluorescent Brightener 367 from China was 44,249,394KG while total export value was $238,692,109. The biggest proportion of exporting volume in the last 12 months was 10.72% in 2019.05.

    2018.11-2019.11 TOP10 Purchasing Countries' Export Data of Chinese Fluorescent Brightener 367

    From 2018.11 to 2019.11, China has exported Fluorescent Brightener 367 to 106 countries in total. Country ranks by import volume from high to low is Japan, Italy, Finland, Thailand, Vietnam, Indonesia, Sweden, Netherlands, Taiwan, Bangladesh. The highest export volume was China to Japan, accounting for 9.13% of the total volume of China.

    Check Export Data for More Purchasing Countries

    Purchasing Country Export Volume(KG) Export Percentage Export Value($)

    Japan

    7,048,242

    9.13%

    15,047,553

    Italy

    5,520,165

    7.15%

    10,787,198

    Finland

    4,824,000

    6.25%

    7,865,522

    Thailand

    4,056,231

    5.26%

    12,941,202

    Vietnam

    2,776,325

    3.60%

    12,600,583

    Indonesia

    2,736,645

    3.55%

    25,732,747

    Sweden

    2,467,700

    3.20%

    3,220,898

    Netherlands

    1,136,423

    1.47%

    19,507,628

    Taiwan

    1,073,119

    1.39%

    5,508,858

    Bangladesh

    1,068,249

    1.38%

    3,766,653

    Korea

    1,056,532

    1.37%

    10,001,768

    Turkey

    946,343

    1.23%

    6,533,966

    Pakistan

    774,991

    1.00%

    5,455,567

    India

    685,045

    0.89%

    14,840,036

    South Africa

    607,080

    0.79%

    3,616,289

    Canada

    597,749

    0.77%

    3,370,058

    Mexico

    571,027

    0.74%

    6,922,304

    Colombia

    528,735

    0.69%

    2,997,296

    Brazil

    497,680

    0.64%

    8,106,787

    America

    472,648

    0.61%

    11,665,288

    Egypt

    411,288

    0.53%

    2,021,355

    Malaysia

    392,399

    0.51%

    2,403,999

    Chile

    365,030

    0.47%

    1,017,947

    Peru

    323,695

    0.42%

    1,813,473

    Germany

    301,715

    0.39%

    5,439,153

    Iran

    292,150

    0.38%

    4,025,861

    United Kingdom

    278,082

    0.36%

    1,729,121

    Singapore

    264,525

    0.34%

    1,232,428

    Spain

    188,480

    0.24%

    2,897,805

    Poland

    177,100

    0.23%

    743,803

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