4-Hydroxybenzolsulfonsure

Bezeichnung:4-Hydroxybenzolsulfonsure

CAS-Nr98-67-9

Englisch Name:4-Hydroxybenzenesulfonic acid

CBNumberCB6442408

SummenformelC6H6O4S

Molgewicht174.17

MOL-Datei98-67-9.mol

Synonyma

4-Hydroxybenzolsulfonsure

4-Hydroxybenzolsulfonsure physikalisch-chemischer Eigenschaften

Schmelzpunkt	52 °C
Siedepunkt	275.14°C (rough estimate)
Dichte	1.337 g/mL at 25 °C
Dampfdruck	69.8Pa at 20℃
Brechungsindex	n20/D 1.489
Löslichkeit	Water (Slightly)
Aggregatzustand	Liquid
pka	9.11(at 25℃)
Farbe	White to Light yellow to Light red
Wichte	1.337
Wasserlöslichkeit	Soluble in water.
Merck	14,7246
BRN	1869034
Stabilität	Stable. Combustible. Incompatible with strong oxidizing agents.
InChIKey	FEPBITJSIHRMRT-UHFFFAOYSA-N
LogP	0.41 at 25℃
CAS Datenbank	98-67-9(CAS DataBase Reference)
NIST chemische Informationen	Benzenesulfonic acid, 4-hydroxy-(98-67-9)
EPA chemische Informationen	p-Phenolsulfonic acid (98-67-9)

Sicherheit

Kennzeichnung gefährlicher	C
R-Sätze:	34-68
S-Sätze:	26-36/37/39-45
RIDADR	UN 2586 8/PG 3
WGK Germany	-
RTECS-Nr.	DB6970000
TSCA	Yes
HazardClass	8
PackingGroup	III
HS Code	29089990
Giftige Stoffe Daten	98-67-9(Hazardous Substances Data)

Gefahreninformationscode (GHS)

4-Hydroxybenzenesulfonic acid Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R34:Verursacht Verätzungen.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36/37/39:Bei der Arbeit geeignete Schutzkleidung,Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn möglich, dieses Etikett vorzeigen).
Chemische Eigenschaften
yellowish oily liquid
Verwenden
4-Hydroxybenzenesulfonic Acid is used as a redox-mediator in the laccase-catalyzed degradation of indigo, a textile dye. Also used in oilfield chemicals, metal working, and as a polymerization catalyst.
Definition
ChEBI: An arenesulfonic acid that is phenol substituted by a sulfo group at C-4.
Vorbereitung Methode
The synthesis of 4-Hydroxybenzenesulfonic acid is as follows：Phenol (25 kg) and 96% sulfuricacid(28 kg) are heated to 50 ℃; then1.25 kg additional sulfuric acid is added and the reaction mixture is heated at 110 ℃ for 5 – 6 h. Reaction water, together with about 5% of the phenol, is distilled off during this period. Yield 95%.
Application
Crude 4-hydroxybenzenesulfonic acid obtained by hot sulfonation, i.e., mixed with 2- hydroxybenzenesulfonic acid, is used as such in the manufacture of synthetic tanning agents. Condensation products of phenolsulfonic acid mixtures with formaldehyde improve the dyeing properties of polyamide fibers. 4-Hydroxybenzenesulfonic acid and 2-halogenomalonic esters form the corresponding ethers, which are used in the manufacture of polyesters with improved affinity for basic dyes. If a mixture of hydroxybenzenesulfonic acids and bis(hydroxyphenyl) sulfone is condensed with formaldehyde, and hydrogensulfite is subsequently added, substances with good dispersing effects on dyes are obtained. They also are used as thinning agents for cement. Most of the 4-hydroxybenzenesulfonic acid is used as an additive for electroplating baths. By comparison, the acid is relatively unimportant as a dye intermediate. With ethylene oxide it forms poly(ethoxy)oxybenzenesulfonic acid, which can be used as a plasticizer and emulsifier.
Flammability and Explosibility
Non flammable

4-Hydroxybenzenesulfonic acid Upstream-Materialien And Downstream Produkte

4-Hydroxybenzolsulfonsure Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

98-67-9, 4-Hydroxybenzenesulfonic acid Verwandte Suche:

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