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N-Hydroxybenzamid

Benzohydroxamic acid Struktur
495-18-1
CAS-Nr.
495-18-1
Bezeichnung:
N-Hydroxybenzamid
Englisch Name:
Benzohydroxamic acid
Synonyma:
BHAM;NSC 3136;NSC 147248;benzohydroxamate;N-HYDROXYBENZAMIDE;Benzohydroxamsαure;n-hydroxy-benzamid;BENZOHYROXAMICACID;benzohydroxamicaci;BENZHYDROXAMIC ACID
CBNumber:
CB4764830
Summenformel:
C7H7NO2
Molgewicht:
137.14
MOL-Datei:
495-18-1.mol

N-Hydroxybenzamid Eigenschaften

Schmelzpunkt:
126-130 °C(lit.)
Siedepunkt:
251.96°C (rough estimate)
Dichte
1.2528 (rough estimate)
Brechungsindex
1.5030 (estimate)
storage temp. 
2-8°C
L?slichkeit
Soluble in alcohol. Slightly soluble in ether. Insoluble in benzene.
Aggregatzustand
Solid
pka
pK1: 8.89(0) (20°C)
Farbe
Rhombic tablets
Wasserl?slichkeit
22 g/L (6 ºC)
BRN 
1907585
Stabilit?t:
Moisture and Temperature Sensitive
InChIKey
VDEUYMSGMPQMIK-UHFFFAOYSA-N
CAS Datenbank
495-18-1(CAS DataBase Reference)
NIST chemische Informationen
Benzamide, n-hydroxy-(495-18-1)
EPA chemische Informationen
Benzohydroxamic acid (495-18-1)
Sicherheit
  • Risiko- und Sicherheitserkl?rung
  • Gefahreninformationscode (GHS)
Kennzeichnung gef?hrlicher Xn
R-S?tze: 68-40-20/21/22
S-S?tze: 45-36/37-36-22
WGK Germany  3
RTECS-Nr. DF9650000
TSCA  Yes
HS Code  29280090
Toxizit?t LD orl-rat: >500 mg/kg NCNSA6 5,26,53
Bildanzeige (GHS) GHS hazard pictogramsGHS hazard pictograms
Alarmwort Warnung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H315 Verursacht Hautreizungen. Hautreizung Kategorie 2 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P264, P280, P302+P352, P321,P332+P313, P362
H319 Verursacht schwere Augenreizung. Schwere Augenreizung Kategorie 2 Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" /> P264, P280, P305+P351+P338,P337+P313P
H335 Kann die Atemwege reizen. Spezifische Zielorgan-Toxizit?t (einmalige Exposition) Kategorie 3 (Atemwegsreizung) Warnung GHS hazard pictogramssrc="/GHS07.jpg" width="20" height="20" />
H341 Kann vermutlich genetische Defekte verursachen. Keimzellmutagenit?t Kategorie 2 Warnung P201,P202, P281, P308+P313, P405,P501
Sicherheit
P201 Vor Gebrauch besondere Anweisungen einholen.
P261 Einatmen von Staub vermeiden.
P264 Nach Gebrauch gründlich waschen.
P264 Nach Gebrauch gründlich waschen.
P280 Schutzhandschuhe/Schutzkleidung/Augenschutz tragen.
P305+P351+P338 BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen. Eventuell vorhandene Kontaktlinsen nach M?glichkeit entfernen. Weiter spülen.
P405 Unter Verschluss aufbewahren.

N-Hydroxybenzamid Chemische Eigenschaften,Einsatz,Produktion Methoden

R-S?tze Betriebsanweisung:

R68:Irreversibler Schaden m?glich.
R40:Verdacht auf krebserzeugende Wirkung.
R20/21/22:Gesundheitssch?dlich beim Einatmen,Verschlucken und Berührung mit der Haut.

S-S?tze Betriebsanweisung:

S45:Bei Unfall oder Unwohlsein sofort Arzt zuziehen (wenn m?glich, dieses Etikett vorzeigen).
S36/37:Bei der Arbeit geeignete Schutzhandschuhe und Schutzkleidung tragen.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S22:Staub nicht einatmen.

Chemische Eigenschaften

Crystalline Solid

Verwenden

Benzhydroxamic acid is used as precursor in the synthesis of novel mono-anionic and di-anionic hydroxamato complexes by reacting with BiPh3 and Bi(O(t)Bu)3, which has anti-bacterial activity against helicobacter pylori. It is used in the photometric determination of trace amounts of vanadium in alloy steels by making mixed-ligand vanadium chelates with ammonium thiocyanate. It is also involved in the palladium catalyzed synthesis of benzisoxazolones.

synthetische

To a rapidly stirred suspension of 19.6 gm (0.35 mole) of powdered anhydrous potassium hydroxide in 120 ml of pyridine, maintained at 0-5°C, is a added a solution of 13.9 gm (0.2 mole) of hydroxylamine hy­drochloride in 100 ml of pyridine.
While maintaining the reaction temperature at 0-5°C, 15 gm (0.1 mole) of ethyl benzoate is added. Vigorous stirring is continued at room tempera­ture for 6 hr. Then the solids are filtered off. The solids are washed with cold water to remove inorganic coproducts. The remainder, recrystallized from aqueous ethanol, represents a 94% yield of potassium benzohy­droxamate.
This salt is triturated with cold 0.01 TV hydrochloric acid. From this mixture, by the usual procedures, 12.5 gm (91% overall) of benzohydrox­amic acid is isolated, m.p. 131°C (from aqueous alcohol).
Preparation of Benzohydroxamic Acid

Allgemeine Beschreibung

Rhombic crystals or light beige solid.

Air & Water Reaktionen

Slightly soluble in water.

Reaktivit?t anzeigen

Benzohydroxamic acid is an amide. Amides/imides react with azo and diazo compounds to generate toxic gases. Flammable gases are formed by the reaction of organic amides/imides with strong reducing agents. Amides are very weak bases (weaker than water). Imides are less basic yet and in fact react with strong bases to form salts. That is, they can react as acids. Mixing amides with dehydrating agents such as P2O5 or SOCl2 generates the corresponding nitrile. The combustion of these compounds generates mixed oxides of nitrogen (NOx).

Health Hazard

ACUTE/CHRONIC HAZARDS: When heated to decomposition Benzohydroxamic acid emits toxic fumes of nitrogen oxides.

Brandgefahr

Flash point data for Benzohydroxamic acid are not available; however, Benzohydroxamic acid is probably combustible.

Sicherheitsprofil

Moderately toxic by ingestion.Mutation data reported. When heated to decomposition itemits toxic fumes of NOx.

N-Hydroxybenzamid Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


N-Hydroxybenzamid Anbieter Lieferant Produzent Hersteller Vertrieb H?ndler.

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495-18-1(N-Hydroxybenzamid)Verwandte Suche:


  • BENZHYDROXAMIC ACID
  • BENZOHYDROXAMIC ACID
  • N-HYDROXYBENZAMIDE
  • N-BENZOYLHYDROXYLAMINE
  • Benzamide,N-hydroxy-
  • benzohydroxamate
  • n-hydroxy-benzamid
  • Phenylhydroxamic acid
  • phenylhydroxamicacid
  • Benzohydroxamsαure
  • Benzoylhydroxamic acid
  • benzoylhydroxamicacid
  • Hydroxylamine, N-benzoyl-
  • BenzohydroxamicAcid,>98%
  • Benzamide, N-hydroxy- (9CI)
  • Benzohydroxamicacid,99%
  • BENZOHYROXAMICACID
  • N-Benzoylhydroxylamine,Benzhydroxamicacid
  • BENZHYDROXAMIC ACID extrapure
  • BHAM
  • Benzeneformhydroxamic acid
  • Benzhydroxamic acid,N-Hydroxybenzamide
  • NSC 147248
  • NSC 3136
  • Benzhydroxamic acid 99%
  • Benzohydroxamic acid for synthesis
  • BENZOYL HYDROXIMIC ACID
  • Benzohydroxamic Acid >
  • benzohydroxamicaci
  • Benzohydroxamic Acid extrapure, 99%
  • enzohydroxamic acid
  • Benzohydroxamic acid (6CI, 8CI)
  • BENZHYDROXAMIC ACID(BHA)
  • 495-18-1
  • C7H7NO2
  • Hydroxylamines (N-Substituted)
  • Hydroxylamines
  • Organic Building Blocks
  • Nitrogen Compounds
  • C7
  • Carbonyl Compounds
  • Carboxylic Acids
  • Building Blocks
  • Aromatics
  • AMIDE
  • Hydroxylamines
  • Hydroxylamines (N-Substituted)
  • Inhibitors
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