Methyltoluol-4-sulfonat

Bezeichnung:Methyltoluol-4-sulfonat

CAS-Nr80-48-8

Englisch Name:Methyl p-toluenesulfonate

CBNumberCB8715537

SummenformelC8H10O3S

Molgewicht186.23

MOL-Datei80-48-8.mol

Synonyma

Methyltoluol-4-sulfonat

Methyltoluol-4-sulfonat physikalisch-chemischer Eigenschaften

Schmelzpunkt	25-28 °C(lit.)
Siedepunkt	144-145 °C5 mm Hg(lit.)
Dichte	1.234 g/mL at 25 °C(lit.)
Dampfdichte	6.45 (vs air)
Dampfdruck	1 mm Hg ( 20 °C)
Brechungsindex	n20/D 1.5172(lit.)
Flammpunkt	>230 °F
storage temp.	2-8°C
Löslichkeit	Chloroform (Slightly), Methanol (Slightly)
Aggregatzustand	Liquid or Low Melting Solid
Farbe	White to yellow
Wasserlöslichkeit	Insoluble
Sensitive	Moisture Sensitive
BRN	609209
LogP	1.88 at 25℃
CAS Datenbank	80-48-8(CAS DataBase Reference)
NIST chemische Informationen	Benzenesulfonic acid, 4-methyl-, methyl ester(80-48-8)
EPA chemische Informationen	Benzenesulfonic acid, 4-methyl-, methyl ester (80-48-8)

Sicherheit

Kennzeichnung gefährlicher	C,Xn
R-Sätze:	22-34-43-40-36/37/38
S-Sätze:	26-36/37/39-45-24
RIDADR	UN 3261 8/PG 2
WGK Germany	3
RTECS-Nr.	XT7000000
F	21
Selbstentzündungstemperatur	896 °F
TSCA	Yes
HazardClass	8
PackingGroup	III
HS Code	29051900
Giftige Stoffe Daten	80-48-8(Hazardous Substances Data)
Toxizität	LD50 orally in Rabbit: 341 mg/kg

Gefahreninformationscode (GHS)

Methyl p-toluenesulfonate Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R22:Gesundheitsschädlich beim Verschlucken.
R34:Verursacht Verätzungen.
R43:Sensibilisierung durch Hautkontakt möglich.
R40:Verdacht auf krebserzeugende Wirkung.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
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).
S24:Berührung mit der Haut vermeiden.
Chemische Eigenschaften
white to slightly yellow low melting solid. Soluble in alcohol, ether, benzene, insoluble in water. Hygroscopic.
Verwenden
Methyl p-toluenesulfonate is used as a methylating agent in organic synthesis. It acts as a catalyst for alkyd resins. It is also employed in selective 1-substitution reaction of tetrazole. Further, it is used in the preparation of dyes.
Verwenden
Methyl p-Toluenesulfonate can be used in the manufacture of dyes and organic synthesis, and also is the raw materials of methylation.
synthetische
Methyl p-toluenesulfonate was synthesized by the reaction of p-toluenesulfonyl chloride with methanol. Mix p-toluenesulfonyl chloride and methanol, slowly add 25% sodium hydroxide solution, control the temperature below 25 °C, stop adding alkali when the pH is 9, continue stirring for 2 hours, and leave overnight. The lower layer of reactant was taken, the upper layer was extracted with benzene, the extract was recovered with benzene and then combined with the lower layer, washed with water and 5% potassium carbonate solution in turn, dried and distilled under reduced pressure to obtain the finished product of methyl p-toluenesulfonate.
Synthesis Reference(s)
Chemical and Pharmaceutical Bulletin, 29, p. 623, 1981 DOI: 10.1248/cpb.29.623
Synthetic Communications, 15, p. 1057, 1985 DOI: 10.1080/00397918508076842
Allgemeine Beschreibung
Methyl p-toluenesulfonate is sulfonate ester present as potentially genotoxic impurity in drug substances. Kinetics of reactions of methyl p-toluenesulfonate with N,N-dimethylaniline has been investigated. It participates in selective 1-substitution reaction of tetrazole.
Hazard
Toxic by ingestion and inhalation, strongirritant to skin and eyes.
Sicherheitsprofil
Poison by ingestion and subcutaneous routes. An eye and severe skin irritant. A vesicant and skin sensitizer. Questionable carcinogen with experimental tumorigenic data. When heated to decomposition it emits toxic fumes of SOx.
läuterung methode
The ester is purified by distillation in vacuo and could be crystallised from pet ether or Et2O/pet ether at low temperature. It is a powerful methylating agent, is TOXIC andis a skin irritant, so it is better to purify it by repeated distillation. [IR: Schreiber Anal Chem 21 1168 1949, Buehler et al. J Org Chem 2 167 1937, Roos et al. Org Synth Coll Vol I 145 1948, Beilstein 11 IV 247.]

Methyl p-toluenesulfonate Upstream-Materialien And Downstream Produkte

Methyltoluol-4-sulfonat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

80-48-8, Methyl p-toluenesulfonate Verwandte Suche:

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