2-Mercaptobenzimidazol

Bezeichnung:2-Mercaptobenzimidazol

CAS-Nr583-39-1

Englisch Name:2-Mercaptobenzimidazole

CBNumberCB8490256

SummenformelC7H6N2S

Molgewicht150.2

MOL-Datei583-39-1.mol

Synonyma

Benzimidazol-2-thiol

2-Mercaptobenzimidazol

2-Mercaptobenzimidazol physikalisch-chemischer Eigenschaften

Schmelzpunkt	300-304 °C (lit.)
Siedepunkt	270.6±23.0 °C(Predicted)
Dichte	1.42
Dampfdruck	0-0.001Pa at 25℃
Brechungsindex	1.5500 (estimate)
Flammpunkt	>250°C
storage temp.	2-8°C
Löslichkeit	0.3g/l
Aggregatzustand	Powder
pka	10.24±0.10(Predicted)
Farbe	White to beige
Wasserlöslichkeit	<0.1 g/100 mL at 23.5 ºC
Merck	14,1082
BRN	119867
Stabilität	Stable. Incompatible with strong oxidizing agents.
LogP	0.88-1.66 at 20-25℃
CAS Datenbank	583-39-1(CAS DataBase Reference)
NIST chemische Informationen	2-Mercaptobenzimidazole(583-39-1)
EPA chemische Informationen	2-Mercaptobenzimidazole (583-39-1)

Sicherheit

Kennzeichnung gefährlicher	Xn
R-Sätze:	20/21/22-36/37/38-22
S-Sätze:	26-36-24/25
RIDADR	UN 2811 6.1/PG 3
WGK Germany	2
RTECS-Nr.	DE1050000
Selbstentzündungstemperatur	480 °C
TSCA	Yes
HazardClass	6.1
PackingGroup	III
HS Code	29339910
Toxizität	LD50 orally in Rabbit: 300 mg/kg

Gefahreninformationscode (GHS)

2-Mercaptobenzimidazole Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R20/21/22:Gesundheitsschädlich beim Einatmen,Verschlucken und Berührung mit der Haut.
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
R22:Gesundheitsschädlich beim Verschlucken.
S-Sätze Betriebsanweisung:
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
Chemische Eigenschaften
yellow or white crystals
Verwenden
An antidegradant, protecting rubber from oxidation. An intermediate in the synthesis of Rabeprazole (R070500)
Verwenden
2-Mercaptobenzimidazole is used as an antidegradant. It is utilized for protecting rubber from oxidation. It is also employed as an intermediate in the preparation of rabeprazole. Further, it finds application in anti-leprosy drugs in medicine. In addition to this, it is used as a copper plating brightener.
Synthesis Reference(s)
Organic Syntheses, Coll. Vol. 4, p. 569, 1963
The Journal of Organic Chemistry, 29, p. 3209, 1964 DOI: 10.1021/jo01034a020
Allgemeine Beschreibung
White to yellow crystals or cream colored powder. Slight odor.
Air & Water Reaktionen
Dust explosion: 0.140 oz/ft3. Insoluble in water. 2-Mercaptobenzimidazole is moisture sensitive. .
Reaktivität anzeigen
An organosulfide and an amine. Organosulfides are incompatible with acids, diazo and azo compounds, halocarbons, isocyanates, aldehydes, alkali metals, nitrides, hydrides, and other strong reducing agents. Reactions with these materials generate heat and in many cases hydrogen gas. Many of these compounds may liberate hydrogen sulfide upon decomposition or reaction with an acid. Amines are chemical bases. They neutralize acids to form salts plus water. These acid-base reactions are exothermic. The amount of heat that is evolved per mole of amine in a neutralization is largely independent of the strength of the amine as a base. Amines may be incompatible with isocyanates, halogenated organics, peroxides, phenols (acidic), epoxides, anhydrides, and acid halides. Flammable gaseous hydrogen is generated by amines in combination with strong reducing agents, such as hydrides.
Brandgefahr
Flash point data for 2-Mercaptobenzimidazole are not available; however, 2-Mercaptobenzimidazole is probably combustible.
Flammability and Explosibility
Non flammable
Sicherheitsprofil
Poison by intraperitoneal and intravenous routes. Moderately toxic by ingestion. Skin and eye irritant. When heated to decomposition it emits toxic fumes of SO, and NO,. See also MERCAPTANS.
läuterung methode
Crystallise it from aqueous EtOH, AcOH or aqueous ammonia. It complexes with many metals. [Brown J Chem Soc 1976 1958, Beilstein 24 II 65, 24 III/IV 287.]

2-Mercaptobenzimidazole Upstream-Materialien And Downstream Produkte

2-Mercaptobenzimidazol Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

583-39-1, 2-Mercaptobenzimidazole Verwandte Suche:

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