1.04177

Light green SF yellowish (C.I. 42095)

• Empirical Formula (Hill Notation): C₃₇H₃₄N₂Na₂O₉S₃
• CAS Number: 5141-20-8
• Molecular Weight: 792.85
• MDL number: MFCD00012121
• UNSPSC Code: 41116130
• NACRES: NA.21

Properties

• 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

Description

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 (λ_max; 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

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 2
• flash_point_f: Not applicable
• flash_point_c: Not applicable