sodium (4Z)-4-[2-(1-hydroxynaphthalen-2-yl)hydrazinylidene]-3-oxo-3,4-dihydronaphthalene-1-sulfonate
Eriochrome Blue Black B
CAS: 3564-14-5
Molecular Formula: C20H13N2NaO5S
sodium (4Z)-4-[2-(1-hydroxynaphthalen-2-yl)hydrazinylidene]-3-oxo-3,4-dihydronaphthalene-1-sulfonate - Names and Identifiers
| Name | Eriochrome Blue Black B |
| Synonyms | C.I. 14640 Mordant Black 3 hispacrombluebg diamondblueblackae diamondblueblackeb fastchromecyanineg fenakronblueblackeb fastchromecyanine6b Eriochromeblueblack C.I. Mordant Black 3 diamondblueblackebs-cf eriochromeblueblackbss Eriochrome Blue Black B C.I. Mordant Black 3 (VAN) eriochrome blue black B (C.I. 14640) C.I. Mordant Black 3 monosodium salt C.I. Mordant Black 3, monosodium salt C.I. Mordant Black 3, monosodium salt (8CI) 3-Hydroxy-4-(1-hydroxy-2-naphthylazo)-1-naphthalenesulfonic acid, sodium salt sodium (4Z)-4-[2-(1-hydroxynaphthalen-2-yl)hydrazinylidene]-3-oxo-3,4-dihydronaphthalene-1-sulfonate |
| CAS | 3564-14-5 |
| EINECS | 222-639-6 |
| InChI | InChI=1/C20H14N2O5S.Na/c23-17-11-18(28(25,26)27)14-7-3-4-8-15(14)19(17)22-21-16-10-9-12-5-1-2-6-13(12)20(16)24;/h1-11,21,24H,(H,25,26,27);/q;+1/p-1/b22-19- |
sodium (4Z)-4-[2-(1-hydroxynaphthalen-2-yl)hydrazinylidene]-3-oxo-3,4-dihydronaphthalene-1-sulfonate - Physico-chemical Properties
| Molecular Formula | C20H13N2NaO5S |
| Molar Mass | 416.38 |
| Water Solubility | Soluble in water(20 g/L (20 C). |
| Solubility | 20g/l |
| Appearance | Powder |
| Color | Purple to dark brown |
| PH | 9.5 (10g/l, H2O, 20℃) |
| Storage Condition | Store at +15°C to +25°C. |
| MDL | MFCD00003934 |
| Physical and Chemical Properties | Brown-black powder. Soluble in acetone, insoluble in toluene, alcohol solution is cherry red. When the aqueous solution is hot, it is purple-black, initially red-brown after hydrochloric acid is added, and then the precipitate is brown-black; When sodium hydroxide is added, it is dark blue, then cherry-red. The sulfuric acid solution was dark blue and was diluted with water to precipitate a purple-black precipitate. |
| Use | Do the complexometric titration indicator. When used, it is prepared into an alcohol solution or an aqueous solution for the determination of calcium, magnesium, manganese, zinc and other metal ions, and the determination of water hardness. |
sodium (4Z)-4-[2-(1-hydroxynaphthalen-2-yl)hydrazinylidene]-3-oxo-3,4-dihydronaphthalene-1-sulfonate - Risk and Safety
| Hazard Symbols | Xi - Irritant |
| Risk Codes | 36 - Irritating to the eyes |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S39 - Wear eye / face protection. |
| WGK Germany | 3 |
| RTECS | QK2195000 |
| TSCA | Yes |
| HS Code | 32041900 |
| Toxicity | LD50 orally in Rabbit: > 5000 mg/kg |
sodium (4Z)-4-[2-(1-hydroxynaphthalen-2-yl)hydrazinylidene]-3-oxo-3,4-dihydronaphthalene-1-sulfonate - Introduction
Soluble in acetone, insoluble in toluene, the alcohol solution is cherry red. When the aqueous solution is hot, it is purple-black. After adding hydrochloric acid, it is reddish brown at first, and then the precipitation is brown-black; adding sodium hydroxide is dark blue, and then cherry red. The sulfuric acid solution is dark blue, diluted with water to precipitate purple-black precipitate.
Last Update：2022-10-16 17:24:51
sodium (4Z)-4-[2-(1-hydroxynaphthalen-2-yl)hydrazinylidene]-3-oxo-3,4-dihydronaphthalene-1-sulfonate - Reference Information
| color index | 14640 |
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | as complexometric titration indicator. When used, it is prepared into an alcohol solution or an aqueous solution for the determination of calcium, magnesium, manganese, zinc and other metal ions, and the determination of water hardness. |
| Production method | It is obtained by coupling 1-amino -2-naphthol -4-sulfonic acid with 1-naphthol after diazotization. |
Last Update：2024-04-09 15:16:50
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Tel: +86-18821248368
Email: Int06@meryer.com
Mobile: +86-18821248368
QQ: 495145328
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sodium (4Z)-4-[2-(1-hydroxynaphthalen-2-yl)hydrazinylidene]-3-oxo-3,4-dihydronaphthalene-1-sulfonate