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21563-29-1

Basic Information
CAS No.: 21563-29-1
Name: 4-Bromo-1,8-naphthalic anhydride
Article Data: 4
Molecular Structure:
Molecular Structure of 21563-29-1 (4-Bromo-1,8-naphthalic anhydride)
Formula: C12H5BrO3
Molecular Weight: 277.074
Synonyms: Naphthalic anhydride, 2-bromo- (8CI);2-Bromo-1,8-naphthalic anhydride;1H,3H-Naphtho[1,8-cd]pyran-1,3-dione,4-bromo-;
EINECS: 201-382-3
Density: 1.812 g/cm3
Melting Point: 217-219 ºC
Boiling Point: 467.2 ºC at 760 mmHg
Flash Point: 236.3 ºC
Appearance: loose-shaped white or off-white crystalline powder
Hazard Symbols: IrritantXi
Risk Codes: R36/37/38
Safety: S26
PSA: 43.37000
LogP: 2.91290
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  • 21563-29-1

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    21563-29-1

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    Compound sourcing ServicesAgency of testing serviceFactory audit serviceFounded in Dec. 1999, Nanjing Chemlin Chemical Industrial Co.,Ltd(CHEMLIN) has been covering the business scope from trading of chemicals to custom-synthesis & Manufacturing. Co

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  • 4-Bromo-1,8-naphthalic anhydride

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    4-Bromo-1,8-naphthalic anhydride

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    Cerametek Materials (CMT) is your industrial and R&D supplier: 1. Semiconductor materials: Compounds of II, III, IV, V, VI groups such as Metal Sulfides, Selenides, Tellurides, Arsenide, Antimonide, Phosphide... 2. Advanced ceramic and crys

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  • 4-Bromo-1,8-naphthalic anhydride

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    4-Bromo-1,8-naphthalic anhydride

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Chemistry


Systematic Name: 6-Bromo-1H,3H-benzo[de]isochromene-1,3-dione 
Molecular Formula: C12H5BrO3
Molecular Weight: 277.07 g/mol
Canonical SMILES: C1=CC2=C(C=CC3=C2C(=C1)C(=O)OC3=O)Br
InChI: InChI=1S/C12H5BrO3/c13-9-5-4-8-10-6(9)2-1-3-7(10)11(14)16-12(8)15/h1-5H
Product Categories: Intermediates of Dyes and Pigments
Melting point:  217-219 °C(lit.)
Index of Refraction: 1.733 
Molar Refractivity: 61.21 cm3 
Molar Volume: 152.8 cm
Polarizability: 24.26×10-24 cm3 
Surface Tension: 68 dyne/cm 
Density: 1.812 g/cm3 
Flash Point: 236.3 °C 
Enthalpy of Vaporization: 72.91 kJ/mol 
Boiling Point: 467.2 °C at 760 mmHg 
Vapour Pressure of 4-Bromo-1,8-naphthalic anhydride (CAS NO.21563-29-1): 6.66E-09 mmHg at 25 °C

Uses

 4-Bromo-1,8-naphthalic anhydride (CAS NO.21563-29-1) is mainly used as dye intermediate for the manufacture of fluorescent yellow, fluorescent orange,etc.

Safety Profile

Hazard Codes: IrritantXi
Risk Statements: 36/37/38 
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements: 26 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
WGK Germany: 3
Hazard Note: Irritant
HazardClass of 4-Bromo-1,8-naphthalic anhydride (CAS NO.21563-29-1): Irritant

Specification

 4-Bromo-1,8-naphthalic anhydride (CAS NO.21563-29-1), its Synonyms are 4-Bromonaphthalene-1,8-dicarboxylic anhydride ; 2-Bromo-1,8-naphthalic anhydride ; 8-Bromo-1,8-naphthalic anhydride . It is loose-shaped white or off-white crystalline powder.