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Alizarin red S mono sodiumsalt (C.I. 58005)

for analysis and indicator.
CAS 130-22-3,
molar mass 342.26 g/mol.
Code: 1062780100
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for analysis and indicator. CAS 130-22-3, molar mass 342.26 g/mol.

Key Spec Table

CAS #EC NumberHill FormulaMolar Mass
130-22-3 204-981-8 C₁₄H₇NaO₇S 342.26 g/mol
Description
Catalogue Number 106278
Product Information
CAS number 130-22-3
EC number 204-981-8
Hill Formula C₁₄H₇NaO₇S
Molar Mass 342.26 g/mol
HS Code 3204 12 00
Structure formula Image
Applications
Application Alizarin red S mono sodiumsalt (C.I. 58005) for analysis and indicator. CAS 130-22-3, molar mass 342.26 g/mol. MSDS and product information below.
Safety Information according to GHS
RTECS CB1095300
Storage class 10 - 13 Other liquids and solids
Disposal 3
Relatively unreactive organic reagents should be collected in container A. If halogenated, they should be collected in container B. For solid residues use container C.
Storage and Shipping Information
Storage Store at +5°C to +30°C.
Specifications
Identity (UV/VIS-Spectrum) passes test
1st transition range pH 4.3 - pH 6.3 Lightly yellow - pink
2nd transition range pH 9.4 - pH 12.0 Brown orange - violet
Absorption maximum λ 1 (buffer pH 4.3) 418 - 424 nm
Absorption maximum λ 2 (buffer pH 6.3) 510 - 517 nm
Absorption maximum λ 3 (buffer pH 9.4) 444 - 450 nm
Absorption maximum λ 4 (buffer pH 12.0) 554 - 558 nm
Spec. Absorptivity A 1%/1cm (λ1max; 0.01 g/l; buffer pH 4.3; calc. on dried substance) 135 - 180
Spec. Absorptivity A 1%/1cm (λ2max; 0.01 g/l; buffer pH 6.3; calc. on dried substance) 145 - 210
Spec. Absorptivity A 1%/1cm (λ3max; 0.01 g/l; buffer pH 9.4; calc. on dried substance) 170 - 230
Spec. Absorptivity A 1%/1cm (λ4max; 0.01 g/l; buffer pH 12.0; calc. on dried substance) 340 - 520
Loss on drying (110 °C) ≤ 10 %
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