Specification Sheet

Product Name
2-Naphthol fluorescence indicator, ≥99.0%

Product Number
70450

Product Brand
SIAL

CAS Number
135-19-3

Molecular Weight
144.17

Test

Specification

APPEARANCE (COLOR)Off White to Beige and Faint Brown to Light Brown
APPEARANCE (FORM)Powder or Flakes
PURITY (GC AREA %)≥ 99.0 %
MELTING POINT121 - 122 C
SOLUBILITY (COLOR)Colorless to Light Yellow and Colorless to Light Brown-Yellow
SOLUBILITY (TURBIDITY)Clear
SOLUBILITY (METHOD)100 mg/ml in methanol
RESIDUE ON IGNITION≤ 0.05 %
CARBON CONTENT83.31 % (theory)
HYDROGEN CONTENT5.59 % (theory)
INFRARED SPECTRUMCONFORMS TO STRUCTURE
EMISSION MAXIMUM419 ± 5 nm
REMARKS ON LUMINESCENCEExc. 281 nm in 0.1 M NaOH

Social Media

LinkedIn icon
Twitter icon
Facebook Icon
Instagram Icon

MilliporeSigma

Research. Development. Production.

We are a leading supplier to the global Life Science industry with solutions and services for research, biotechnology development and production, and pharmaceutical drug therapy development and production.

© 2021 Merck KGaA, Darmstadt, Germany and/or its affiliates. All Rights Reserved.

Reproduction of any materials from the site is strictly forbidden without permission.