| Section: 9 | Organic dyes and pigments (OD) | Page: 335 | 
| IRUG filename: IOD00335 | Data type: Infrared | IRUG material class: Organic dyes and pigments (OD) | 
| Sample type: Reference material | Common name(s): Pigment Red 57 (PR57), BONA, Na, Azo Lake (Salt Type), CI15850 | Trade name(s): Irgalite Rubine 4BP | 
| CAS name: 2-Naphthalenecarboxylic acid, 3-hydroxy-4-[2-(4-methyl-2-sulfophenyl)diazenyl]-, sodium salt (1:2) | Sample source 1: Ciba | Sample identifier 1: Irgalite Rubine 4BP | 
| Sample source 2: Tate Gallery | Source location 2: Millbank, London, SW1P 4RG, UK | Sample identifier 2: PR57, Irgalite Rubine 4BP | 
| Color: Red | Other: MW=430.34, calculated | Application: MFTIR (Fourier transform infrared microspectroscopy) | 
| Mode: Tran | Originating institution name: Tate Gallery | Originating institution acronym: TG | 
| Molecular formula: C18 H12 N2 O6 S * 2Na | CAS registry no: 5858-81-1 | 
| IRUG Structure Tracking #: 872 Common Name(s): Pigment Red 57 (PR57); BONA, Na; Azo Lake (Salt Type); CI15850 CAS Name: 2-Naphthalenecarboxylic acid, 3-hydroxy-4-[2-(4-methyl-2-sulfophenyl)diazenyl]-, sodium salt (1:2) CAS Registry No: 5858-81-1 IRUG Material Class: Organic dyes and pigments (OD) Molecular Formula: C18 H12 N2 O6 S * 2 Na MW: 430.34 |