CONGO RED (C.I. 22120) INDICATOR PH 3.0-

Analysis Note

Appearance: Red-brown to brownishred powder, eventually with granular parts.
Appearance of solution (1.0 gr/l; water): Almost clear to slightly turbid, red
Transition range: pH 3.0 - pH 5.2violet - orange-red
Loss on drying (110 °C): ≤ 5 %
Sensitivity test: passes test

Molecular Weight: 696.66. Empirical Formula: C₃₂H₂₂N₆Na₂O₆S₂. Agency: reag. Ph. Eur.. Quality Level: 200. vapor pressure: <. 1 Pa . form: powder. potency: 143 . mg/kg LD₅₀, oral (Rat). loss: ≤. 5% loss on drying, 110°C. color: almost clear to slightly turbid red, 1.0g/L. water, red-brown. pH: 6.7 (20 . °C, 10 . g/L in H₂O). mp: >. 360 . °C. bulk density: 600‑. 700 . kg/m³. storage temp.: 2-30°C. InChI: 1S/C32H24N6O6S2.2Na/c33-31-25-7-3-1-5-23(25)29(45(39,40)41)17-27(31)37-35-21-13-9-19(10-14-21)20-11-15-22(16-12-20)36-38-28-18-30(46(42,43)44)24-6-2-4-8-26(24)32(28)34. . /h1-18H,33-34H2,(H,39,40,41)(H,42,43,44). . /q. 2*+1/p-2. InChI key: IQFVPQOLBLOTPF-UHFFFAOYSA-L. Pictograms: GHS08. Signal Word: Danger. Hazard Statements: H350 - H361d. Precautionary Statements: P201 - P202 - P280 - P308 + P313 - P405 - P501. Hazard Classifications: Carc. 1B - Repr. 2. Storage Class Code: 6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects. WGK: WGK 3.