Naphthalin-2,7-disulfonsure
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- CAS-Nr.
- 92-41-1
- Bezeichnung:
- Naphthalin-2,7-disulfonsure
- Englisch Name:
- Naphthalene-2,7-disulfonic acid
- Synonyma:
- Ebert-Merz α-acid;naphthalene-2,7-disulfonicaci;3,6-Naphthalenedisulfonic acid;2,7-NAPHTHALENE DISULFONIC ACID;naphthalene-2,7-disulfonic acid;naphthalene-2,7-disulphonic acid
- CBNumber:
- CB5297140
- Summenformel:
- C10H8O6S2
- Molgewicht:
- 288.3
- MOL-Datei:
- 92-41-1.mol
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Naphthalin-2,7-disulfonsure Eigenschaften
Sicherheit
- Risiko- und Sicherheitserkl?rung
- Gefahreninformationscode (GHS)
| RIDADR |
1759 |
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| HazardClass |
8 |
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| PackingGroup |
III |
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| HS Code |
2904100090 |
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| Bildanzeige (GHS) |
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| Alarmwort |
Achtung |
| Gefahrenhinweise |
| Code |
Gefahrenhinweise |
Gefahrenklasse |
Abteilung |
Alarmwort |
Symbol |
P-Code |
| H314 |
Verursacht schwere Ver?tzungen der Haut und schwere Augensch?den. |
?tzwirkung auf die Haut |
Kategorie 1B |
Achtung |
![GHS hazard pictograms]() src="/GHS05.jpg" width="20" height="20" /> |
P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501 |
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| Sicherheit |
| P260 |
Dampf/Aerosol/Nebel nicht einatmen. |
| P280 |
Schutzhandschuhe/Schutzkleidung/Augenschutz tragen. |
| P310 |
Sofort GIFTINFORMATIONSZENTRUM/Arzt/ anrufen. |
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Naphthalin-2,7-disulfonsure Chemische Eigenschaften,Einsatz,Produktion Methoden
Chemische Eigenschaften
White, crystalline solid.Soluble in water. Combustible. Naphthalene-2,7-disulfonic acid [92- 41-1]. C10H8O6S2, Mr 288.28; the sodium salt of Naphthalene-2,7-disulfonic acid is much more soluble than that of the 2,6- isomer but can be isolated and purified by precipitation of the calcium salt at lower temperature followed by recrystallization.
Verwenden
Intermediate for dyes. The disodium salt of 8 gives 2-hydroxynaphthalene-7-sulfonic acid or 2,7-dihydroxynaphthalene by fusion processes. Sulfonation by oleum gives the 1,3,6-trisulfonic acid, and nitration gives 1-nitronaphthalene-3,6- disulfonic acid. In sulfuric acid solution, the disodium salt of naphthalene-2,7-disulfonic acid undergoes an unusual reaction at the 4-position with 4,40 -bis- (dimethylamino)benzhydrol. The resulting condensation product is oxidized with lead dioxide to give the acid basic dye C.I. Acid Green 16.
Definition
ChEBI: A naphthalenesulfonic acid in which the sulfo groups are attached to positions 2 and 7 of the naphthalene ring.
l?uterung methode
Crystallise the acid from conc HCl. The disulfonamide has m 273o (from EtOH). [Beilstein 11 II 119, 11 III 463.]
Naphthalin-2,7-disulfonsure Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
Naphthalin-2,7-disulfonsure Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.
Global( 67)Lieferanten
92-41-1(Naphthalin-2,7-disulfonsure)Verwandte Suche:
Natriumxylolsulfonat
Naphthalin
2-Naphthalinsulfons?ure
Natriumnaphthalin-1-sulfonat
Dinatrium-3,6-bis[(o-arsonophenyl)azo]-4,5-dihydroxynaphthalin-2,7-disulfonat
Dinatrium-4,5-dihydroxy-3-(p-nitrophenylazo)naphthalin-2,7-disulfonat
Dinatrium-4-[(o-arsonophenyl)azo]-3-hydroxynaphthalin-2,7-disulfonat
Trinatrium-2-(-hydrogenarsonatophenylazo)-1,8-dihydroxynaphthalin-3,6-disulfonat
Dinatrium-5-acetylamino-4-hydroxy-3-(phenylazo)naphthalin-2,7-disulfonat
Dinatrium-4,5-dihydroxy-3-phenylazonaphthalin-2,7-disulfonat
Trinatrium-4,5-dihydroxy-3-(4-sulfonatophenylazo)naphthalin-2,7-disulfonat
Dinatrium-3-[[4-(acetylamino)phenyl]azo]-4-hydroxy-5-[[(p-tolyl)sulfonyl]amino]naphthalin-2,7-disulfonat
Dinatrium-3-(5-chlor-2-hydroxyphenylazo)-4,5-dihydroxynaphthalin-2,7-disulfonat
Naphthalin-1,5-disulfonsure
Dinatrium-1-(2,4-dimethylphenylazo)-2-hydroxynaphthalin-3,6-disulfonat
Dinatriumnaphthalin-2,6-disulfonat
Dinatrium-3-((2,4-dimethylphenyl)azo)-4-hydroxynaphthalin-2,7-disulfonat
Tetranatrium-3-hydroxy-4-(2-sulfonato-4-(4-sulfonatophenylazo)phenylazo)naphthalin-2,7-disulfonat
- naphthalene-2,7-disulfonic acid
- 2,7-NAPHTHALENE DISULFONIC ACID
- naphthalene-2,7-disulphonic acid
- 3,6-Naphthalenedisulfonic acid
- Ebert-Merz α-acid
- naphthalene-2,7-disulfonicaci
- 92-41-1
- 91-41-1
- C10H8S2O6
- Intermediates of Dyes and Pigments
- bc0001
