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Optical brightener OB-1 Structure

Optical brightener OB-1

Chemical Properties

Melting point >300 °C(lit.)
Boiling point 533.34°C (rough estimate)
Density  1.2151 (rough estimate)
vapor pressure  0Pa at 25℃
refractive index  1.5800 (estimate)
storage temp.  Sealed in dry,Room Temperature
solubility  DMSO (Slightly, Heated)
form  Solid
pka 1.45±0.10(Predicted)
color  Yellow
Water Solubility  10μg/L at 25℃
Stability Stable. Incompatible with strong oxidizing agents.
InChIKey ORACIQIJMCYPHQ-KTKRTIGZSA-N
LogP 5.499 at 25℃
Indirect Additives used in Food Contact Substances 2,2'-(1,2-ETHENEDIYLDI-4,1-PHENYLENE) BIS(BENZOXAZOLE)
FDA 21 CFR 178.3297
CAS DataBase Reference 1533-45-5(CAS DataBase Reference)
FDA UNII 128BY3ERD5
EPA Substance Registry System Benzoxazole, 2,2'-(1,2-ethenediyldi-4,1-phenylene)bis- (1533-45-5)

Safety

Symbol(GHS)
Signal wordWarning
Hazard statements H315-H319-H335
Precautionary statements P261-P264-P271-P280-P302+P352-P305+P351+P338
Hazard Codes  Xi
Risk Statements  36/37/38
Safety Statements  26-37/39-24/25
WGK Germany  1
HS Code  29349990
NFPA 704:
1
2 0

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