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Eriochrome black T
Chemical Name |
Eriochrome black T |
Synonyms |
C.I. 14645; 3-Hydroxy-4-(1-hydroxy-2-naphthylazo)-7-nitro-1-naphthalene sulfonic acid sodium salt; Mordant Black 11 |
CAS No. |
1787-61-7 |
Molecular formula |
C20H12N3NaO7S |
EINECS No. |
217-250-3 |
Molecular weight |
461.38 |
Molecular Structure |
|
Details |
Appearance: brown black powder with metal luster Water Soluble Test: pass Solublity in Ethanol Passes Test: pass Sensitivity Test: pass Sulfated ash(as SO4): 20% max. |
Main Application |
Used as complexometric titration indicator. |
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