1.04724
Indigo carmine (C.I. 73015)
for analysis
Synonym(s):
Indigo carmine (C.I. 73015)
About This Item
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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
storage temp.
2-30°C
SMILES string
[Na+].[Na+].[S](=O)(=O)([O-])c1cc2c(cc1)N\C(=C3\Nc4c(cc(cc4)[S](=O)(=O)[O-])C\3=O)\C2=O
InChI
1S/C16H10N2O8S2.2Na/c19-15-9-5-7(27(21,22)23)1-3-11(9)17-13(15)14-16(20)10-6-8(28(24,25)26)2-4-12(10)18-14;;/h1-6,17-18H,(H,21,22,23)(H,24,25,26);;/q;2*+1/p-2/b14-13+;;
InChI key
KHLVKKOJDHCJMG-QDBORUFSSA-L
Related Categories
1 of 4
This Item | |||
|---|---|---|---|
| potency >2000 mg/kg LD50, oral (Rat) | potency - | potency - | potency - |
| composition dye content, ≥80% spectrophotometric assay | composition - | composition - | composition Dye content, 85% |
| loss ≤10% loss on drying, 110°C | loss - | loss ≤5% loss on drying | loss - |
| pH 7 (20 °C, 10 g/L in H2O) | pH - | pH 3.87 (30 °C, 7.14 g/L) | pH 3.87 (30 °C, 7.14 g/L) |
| mp >340 °C | mp - | mp >340 °C | mp ≥340 °C |
| solubility 1 g/L | solubility - | solubility methanol: 0.01 g/10 mL, blue to very deep blue | solubility - |
Analysis Note
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 %
signalword
Warning
hcodes
Hazard Classifications
Skin Sens. 1
Storage Class
11 - Combustible Solids
wgk
WGK 1
Certificates of Analysis (COA)
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Global Trade Item Number
| SKU | GTIN |
|---|---|
| 1047240025 | 04022536054100 |
| 1047240000 | 04022536054094 |
| 1047249999 | 04022536648941 |
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