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1.04177

Sigma-Aldrich

Light green SF yellowish (C.I. 42095)

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Empirical Formula (Hill Notation):
C37H34N2Na2O9S3
CAS Number:
5141-20-8
Molecular Weight:
792.85
MDL number:
MFCD00012121
NACRES:
NA.21

form

solid

Quality Level

200

potency

>2000 mg/kg LD50, oral (Rat)

composition

Dye, ≥75% spectrophotometric assay

pH

2.9 (25 °C, 10 g/L in H2O)

solubility

200 g/L

bulk density

200 kg/m3

application(s)

diagnostic assay manufacturing
hematology
histology

storage temp.

2-30°C

InChI

1S/C37H36N2O9S3.2Na/c1-3-38(25-27-7-5-9-35(23-27)50(43,44)45)32-17-11-29(12-18-32)37(31-15-21-34(22-16-31)49(40,41)42)30-13-19-33(20-14-30)39(4-2)26-28-8-6-10-36(24-28)51(46,47)48;;/h5-24H,3-4,25-26H2,1-2H3,(H2-,40,41,42,43,44,45,46,47,48);;/q;2*+1/p-2

InChI key

DGOBMKYRQHEFGQ-UHFFFAOYSA-L

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General description

Light green SF yellowish (C.I. 42095) for microscopy Certistain®, is a dry dye that is used for the preparation of a staining solution which is is widely used as a counterstain. for e.g. trichrome Masson-Goldner staining in histological sections or for Papanicolaou’s polychromatic staining in cytology of samples human origin. As CERTISTAIN® dye it is chemically quality-certified according to highest standards and strict specifications.

Application

for microscopy Certistain®

Analysis Note

Dye content (spectrophotometrically): ≥ 75 %
Identity
- sodium:
passes test
- UV/VIS-Spectrum: passes test
Absorption maximum λ max (water): 629 - 634 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.005 g/l; water): 830 - 1130
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 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

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