Alizarin yellow GG , Indicator level , 584-42-9

Synonym(s):
5-(3-Nitrophenylazo)salicylic acid sodium salt;Alizarin Yellow 2G;Metachrome Yellow;Mordant Yellow 1

CAS NO.：584-42-9

Empirical Formula: C13H8N3NaO5

Molecular Weight: 309.21

MDL number: MFCD00044746

EINECS: 209-536-1

PRODUCT Properties

• Melting point: >300 C
• solubility: Solubility Soluble in water, methyl cellosolve; slightly soluble in ethanol, acetone
• form: powder
• Colour Index: 14025
• color: Yellow-orange
• PH Range: 10.2(yellow)-12(red)
• Water Solubility: SOLUBLE IN COLD WATER
• λmax: 362nm
• Merck: 14,5919
• BRN: 3820455
• Major Application: Optical engineering applications, sensors, making masks, electrorheological materials, surface treatment of copper, coloring zinc, aluminum, corrosion testing, lubricants, textiles, food storage, determine bacterial growth, pharmaceutical preparations
• CAS DataBase Reference: 584-42-9(CAS DataBase Reference)
• EPA Substance Registry System: Benzoic acid, 2-hydroxy-5-[(3-nitrophenyl)azo]-, monosodium salt (584-42-9)

Description and Uses

Biological stain and acid-base indicator. pH: 10.2 colorless, 12.0 yellow.

Safety

• Hazard Codes: Xi
• Risk Statements: 36/37/38
• Safety Statements: 24/25-36-26
• WGK Germany: 3
• RTECS: DH2528550
• HS Code: 32041900