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Lab Chemicals
Biological Stains and Dyes
METHYLENE BLUE
METHYLENE BLUE For Microscopy
C.I.No.52015 Methylene blue is used as a dye for a number of different staining procedures, such as Wright's stain and Jenner's stain.
3,7-bis(Dimethylamino)-phenothiazin-5-ium chloride, Basic Blue 9, Tetramethylthionine chloride
Article No.
04645
Grade
For Microscopy
Purity
82%
CAS No.
61-73-4
Molecular Formula
C
1
6
H
1
8
CIN
3
SxH
2
O
Molecular Weight
319.859 (anhydrous basis)
H.S. Code
3204.1351
Shelf Life
60 Months
MSDS
DE
EN
FR
KO
PT
ES
TH
TR
Certificate of Analysis (COAs)
Physical Properties
Physical state at 20 °C
Solid
Colour
Dark green
Odour
Odorless
Melting point/ Freezing point [°C]
190 °C
Vapour density
13
Solubility in water [% weight]
Soluble in water
Packings
25 g
(00025)
100 g
(00100)
1000 g
(01000)
Specifications
Appearance
Dark blue, crystalline powder with a copper-coloured sheen, or green crystals with a bronze-coloured sheen
Dye content
About 82%
Absorption maxima in 50% ethanol
660 - 665 nm
Specific absorptivity A1%/1 cm (λmax; 0.003 g/L; ethanol)
2250-2750
Loss on drying (at 105°C)
8.0 - 22.0%
Safety Information and Hazard Symbols
Symbol: GHS07
Signal Word: Warning
Hazardous Statement: H302
Precaution Statement: P264 - P270 - P301 + P312 + P330 - P501
Revision Date :
14-Aug-2020