1.06595
Rhodizonic acid disodium salt
indicator for sulfate titration
Synonym(s):
Rhodizonic acid disodium salt, 1,2-Dihydroxy-3,4,5,6-tetraoxo-1-cyclohexene disodium salt, Sodium rhodizonate
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About This Item
Empirical Formula (Hill Notation):
C6Na2O6
CAS Number:
Molecular Weight:
214.04
EC Index Number:
208-340-3
UNSPSC Code:
12352107
MDL number:
Form:
solid
Quality Level
InChI
1S/C6O6.2Na/c7-1-2(8)4(10)6(12)5(11)3(1)9;;/q-2;2*+1
InChI key
WNLGVLVRNGQRFD-UHFFFAOYSA-N
form
solid
mp
>300 °C
bulk density
620 kg/m3
storage temp.
15-25°C
Analysis Note
Assay (perchloric acid titration): ≥ 98.5 %
Identity (UV/VIS-Spectrum): passes test
Absorption maximum λmax.(Hydrochloric acid 0.1 mol/l): 317 - 320 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.02 g/l; hydrochloric acid 0.1 mol/l): ≥ 540
Suitability as indicator (for sulfate titration): passes test
Identity (UV/VIS-Spectrum): passes test
Absorption maximum λmax.(Hydrochloric acid 0.1 mol/l): 317 - 320 nm
Spec. Absorptivity A 1%/1cm (λmax; 0.02 g/l; hydrochloric acid 0.1 mol/l): ≥ 540
Suitability as indicator (for sulfate titration): passes test
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
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