Skip to Content
Merck
CN
All Photos(1)

Documents

Safety Information

1.04207

Sigma-Aldrich

Neutral red (C.I. 50040)

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Empirical Formula (Hill Notation):
C15H17ClN4
CAS Number:
553-24-2
Molecular Weight:
288.78
MDL number:
MFCD00012651
UNSPSC Code:
41116130
NACRES:
NA.21

form

solid

Quality Level

200

composition

Dye, ≥90% spectrophotometric assay

pH

3.1 (20 °C, 10 g/L in H2O)

solubility

50 g/L

bulk density

350‑500 kg/m3

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

2-30°C

InChI

1S/C15H16N4.ClH/c1-9-6-13-15(8-11(9)16)18-14-7-10(19(2)3)4-5-12(14)17-13;/h4-8H,16H2,1-3H3;1H

InChI key

PGSADBUBUOPOJS-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

General description

Neutral red (C.I. 50040) - for microscopy Certistain®, is a dry staining dye that is used to prepare a staining solution, that makes target structures in hematological specimen materials evaluable for diagnostic purposes. Neutral red belongs to the group of azines. Neutral red can be used for several staining such as supravital staining of leukocytes .In histology for nuclear staining, fluorescence staining, polychrome staining or for counterstaining in Gram staining. As CERTISTAIN® dye it is chemically quality-certified according to highest standards and strict specifications.

Application

for microscopy Certistain®

Analysis Note

Dye content (spectrophotometrically): ≥ 90 %
Identity (UV/VIS-Spectrum): passes test
Absorption maximum λ max (ethanol 50 %): 540 - 543 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.005 g/l; ethanol 50 %): 1420 - 1610
TLC-Test: passes test
Loss on drying (110 °C): ≤ 12 %
Suitability for microscopy: passes test

Legal Information

CERTISTAIN is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

新产品

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service