ChemicalBook--->CAS DataBase List--->2866-43-5

2866-43-5

2866-43-5 Structure

2866-43-5 Structure
IdentificationBack Directory
[Name]

Fluorescent Brightener 185
[CAS]

2866-43-5
[Synonyms]

FBA185
c.i. 515240
fluorescent brightener 185
sof (fluorescent brightener)
C.I. Fluorescent Brightener 172
2,5-di(benzoxazol-2-yl)thiophene
2,5-Bis(2-benzoxazolyl)thiophene
2,5-di(benzoxazol-2-yl)-thiophen
2,5-Bis(benzoxazol-2-yl)thiophene
2,5-BIS(2-BENZOXAZOL-2-YL)THIOPHENE
2,2'-(2,5-thiophenediyl)bis-benzoxazol
2,2'-thiophene-2,5-diylbis(benzoxazole)
2,2'-(2,5-thiophenediyl)bis-benzoxazole
(12224-41-8) fluorescent brightener 185
Benzoxazole, 2,2-(2,5-thiophenediyl)bis-
Fluorescent Brightener 185 ISO 9001:2015 REACH
2-[5-(1,3-benzoxazol-2-yl)-2-thienyl]-1,3-benzoxazole
2-[5-(1,3-benzoxazol-2-yl)thiophen-2-yl]-1,3-benzoxazole
FLUORESCENT BRIGHTENER 185 :2,2''-(2,5-THIOPHENEDIYL)BIS-BENZOXAZOLE
[EINECS(EC#)]

220-685-1
[Molecular Formula]

C18H10N2O2S
[MDL Number]

MFCD00205000
[MOL File]

2866-43-5.mol
[Molecular Weight]

318.35
Chemical PropertiesBack Directory
[Melting point ]

216-220°C
[Boiling point ]

466.4±30.0 °C(Predicted)
[density ]

1.385
[refractive index ]

1.6000 (estimate)
[pka]

1.27±0.10(Predicted)
[Water Solubility ]

9.551ug/L(25 ºC)
[EPA Substance Registry System]

2,5-Bis(2-benzoxazoyl)thiophene (2866-43-5)
Raw materials And Preparation ProductsBack Directory
Hazard InformationBack Directory
[Chemical Properties]

This product is light yellow crystalline powder with bright blue fluorescence. Melting point 218~219 ℃. Miscible with water in any ratio. Hard water resistance, acid resistance, alkali resistance. The fabric after using it has good light fastness, chlorine bleaching resistance and washing fastness.
[Uses]

Fluorescent Brightener 185 is used as a whitening treatment agent for acetate fiber, nylon, polyester, polypropylene, vinyl and blended fibers.
[Synthesis]

Using o-aminophenol and chlorobenzene as raw materials, Fluorescent Brightener 185 can be obtained after reaction.
Safety DataBack Directory
[Toxicity]

LD50 oral in rat: > 30gm/kg
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