Skip to Content
MilliporeSigma
All Photos(2)

Key Documents

1.59270

Supelco

Methylene blue (C.I. 52015)

redox indicator, Reag. Ph Eur

Synonym(s):

Methylene Blue trihydrate, Methylthioninium chloride, 3,7-Bis(dimethylamino)phenothiazinium chloride, Tetramethylthionine chloride

Sign Into View Organizational & Contract Pricing


About This Item

Empirical Formula (Hill Notation):
C16H18ClN3S · 3H2O
CAS Number:
Molecular Weight:
373.90
Beilstein/REAXYS Number:
3599847
MDL number:
UNSPSC Code:
12352107
EC Index Number:
200-515-2
NACRES:
NA.05

product name

Methylene blue (C.I. 52015), Reag. Ph Eur

agency

reag. Ph. Eur.
suitable for SM 4500 - NH3

Quality Level

form

powder

potency

1180 mg/kg LD50, oral (Rat)

loss

10-15% loss on drying, 110 °C

color

dark green

pH

3 (20 °C, 10 g/L in H2O)

mp

190 °C (dec.) (lit.)

solubility

50 g/L

bulk density

400‑600 kg/m3

λmax

660-665 nm at 50% in ethanol

storage temp.

2-30°C

SMILES string

[Cl-].CN(C)c1ccc2N=C3C=C\C(C=C3Sc2c1)=[N+](/C)C

InChI

1S/C16H18N3S.ClH/c1-18(2)11-5-7-13-15(9-11)20-16-10-12(19(3)4)6-8-14(16)17-13;/h5-10H,1-4H3;1H/q+1;/p-1

InChI key

CXKWCBBOMKCUKX-UHFFFAOYSA-M

Looking for similar products? Visit Product Comparison Guide

Analysis Note

Appearance: Dark green powder, eventually with granular and bright parts.
Identity (UV/VIS-Spectrum): passes test
Absorption maximum λmax. (ethanol 50 %): 660 - 665 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.003 g/l; ethanol 50 %): 2250 - 2750
Loss on drying (110 °C): 10 - 15 %

pictograms

Exclamation mark

signalword

Warning

hcodes

Hazard Classifications

Acute Tox. 4 Oral

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


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

Articles

A step-by-step method for the photometric determination of Perchlorate in wastewater using Spectroquant® test kits and photometer for a precise and quantitative analysis.

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