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LC4113 Methyl red (C.I. 13020)

indicator ACS,Reag. Ph Eur

 

Order number Packaging Quantity Price €
AC31113 Glass bottle 25 g 21.6
AC31113 Glass bottle 100 g 49.95

 

Product information
Grade ACS,Reag. Ph Eur
Synonyms 4-Dimethylaminoazobenzene-2′-carboxylic acid
Hill Formula C15H15N3O2
HS Code 2927 00 00
EC number 207-776-1
Molar mass 269.31 g/mol
CAS number 493-52-7

 

Chemical and physical data
Solubility (20 °C) slightly soluble
Melting point 178 – 182 °C
Molar mass 269.31 g/mol
Bulk density 300 – 500 kg/m3

 

Safety information
R Phrase R 51/53
Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
S Phrase S 61
Avoid release to the environment. Refer to special instructions/ Safety data sheets.
Categories of danger dangerous for the environment
Hazard Symbol Dangerous for the environment
Storage class 10 – 13 Other liquids and solids
WGK WGK 2 water endangering
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.

 

Transport information
Declaration (transport by sea) IMDG-Code UN 3077 ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S.(2-(4-DIMETHYLAMINOPHENYLAZO)BENZOIC ACID), 9, III, Marine Pollutant: P
Declaration (transport by air) IATA-DGR UN 3077 ENVIRONMENTALLY HAZARDOUS SUBSTANCE, SOLID, N.O.S.(2-(4-DIMETHYLAMINOPHENYLAZO)BENZOIC ACID), 9, III

 

Specifications
Identity (UV/VIS-Spectrum) passes test
Appearance Red to red-violet powder, eventually with granular parts.
Clarity of solution (1 g/l; ethanol) passes test
Melting point (capillary method, temperatur measerment in the heating block) 179 – 182 °C
Transition range pH 4.4 – pH 6.0 Red – yellow
Absorption maximum
– buffer pH 4.5
523 – 526 nm
– buffer pH 6.2 427 – 437 nm
Spec. Absorptivity A 1%/1cm
– λ7m7ax; 0.005 g/l; buffer pH 4.5; calculated on anhydrous substance
1350 – 1500
– λ7m7ax; 0.005 g/l; buffer pH 6.2; calculated on anhydrous substance 700 – 800
Transition range
– according to ACS
passes test
Loss on drying (110 °C) ≤ 5 %

 

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