1.04724
Indigo carmine (C.I. 73015)
for analysis
Synonym(s):
Indigo carmine (C.I. 73015)
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About This Item
Empirical Formula (Hill Notation):
C16H8N2Na2O8S2
CAS Number:
Molecular Weight:
466.35
MDL number:
UNSPSC Code:
12171506
EC Index Number:
212-728-8
NACRES:
NB.21
Recommended Products
Quality Level
potency
>2000 mg/kg LD50, oral (Rat)
composition
dye content, ≥80% spectrophotometric assay
loss
≤10% loss on drying, 110°C
pH
7 (20 °C, 10 g/L in H2O)
mp
>340 °C
solubility
1 g/L
density
0.71 g/cm3 at 29 °C
bulk density
700‑900 kg/m3
λmax
608-612 nm in water
Related Categories
Analysis Note
Dye content (spectrophotometrically): ≥ 80 %
Identity (UV/VIS-Spectrum): passes test
Absorption maximum λmax. (water): 608 - 612 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.01 g/l; water): 380 - 475
TLC-Test: passes test
Loss on drying (110 °C): ≤ 10 %
Identity (UV/VIS-Spectrum): passes test
Absorption maximum λmax. (water): 608 - 612 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.01 g/l; water): 380 - 475
TLC-Test: passes test
Loss on drying (110 °C): ≤ 10 %
Signal Word
Warning
Hazard Statements
Precautionary Statements
Hazard Classifications
Skin Sens. 1
Storage Class Code
11 - Combustible Solids
WGK
WGK 1
Certificates of Analysis (COA)
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