Alizarin red S mono sodiumsalt (C.I. 58005) for analysis and indicator 1

Alizarin red S mono sodiumsalt (C.I. 58005) for analysis and indicator

Alizarin red S mono sodiumsalt (C.I. 58005) for analysis and indicator

Rp. 1,663,200

Last Updated

14 Feb 2023

Country Origin

Germany

Minimum Order

1 Gram

Category

Chemicals

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Product Details

Specification of Alizarin red S mono sodiumsalt (C.I. 58005) for analysis and indicator

Alizarin red S mono sodiumsalt (C.I. 58005) for analysis and indicator

Laboratory Reagents

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

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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