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m-Toluylsure Produkt Beschreibung

m-Toluic acid Struktur
99-04-7
CAS-Nr.
99-04-7
Bezeichnung:
m-Toluylsure
Englisch Name:
m-Toluic acid
Synonyma:
m-toluic;META-TOLUATE;m-Tlouicacid;3-TOLUIC ACID;M-TOLUIC ACID;M-TOLUYLIC ACID;3-Methylbenzoic;meta-toluicacid;M-ToluicAcid>98%;m-Toluicacid,99%
CBNumber:
CB4148782
Summenformel:
C8H8O2
Molgewicht:
136.15
MOL-Datei:
99-04-7.mol

m-Toluylsure Eigenschaften

Schmelzpunkt:
108 °C
Siedepunkt:
263 °C(lit.)
Dichte
1.054 g/mL at 25 °C(lit.)
Brechungsindex
1.509
Flammpunkt:
150 °C
storage temp. 
Store below +30°C.
Löslichkeit
Soluble in alcohol and ether.
pka
4.27(at 25℃)
Aggregatzustand
Crystalline Solid
Farbe
Slightly yellow to beige-yellow
PH
3.4 (H2O, 20℃)(saturated solution)
Wasserlöslichkeit
<0.1 g/100 mL at 19 ºC
Merck 
14,9535
BRN 
970526
Stabilität:
Stable. Combustible. Incompatible with strong oxidizing agents.
InChIKey
GPSDUZXPYCFOSQ-UHFFFAOYSA-N
CAS Datenbank
99-04-7(CAS DataBase Reference)
NIST chemische Informationen
Benzoic acid, 3-methyl-(99-04-7)
EPA chemische Informationen
Benzoic acid, 3-methyl-(99-04-7)
Sicherheit
  • Risiko- und Sicherheitserklärung
  • Gefahreninformationscode (GHS)
Kennzeichnung gefährlicher Xn
R-Sätze: 22
S-Sätze: 22-24/25-36
WGK Germany  3
RTECS-Nr. XU1200000
Selbstentzündungstemperatur 500 °C
TSCA  Yes
HS Code  29163900
Toxizität LD50 orally in Rabbit: 7000 mg/kg
Bildanzeige (GHS)
Alarmwort Warnung
Gefahrenhinweise
Code Gefahrenhinweise Gefahrenklasse Abteilung Alarmwort Symbol P-Code
H302 Gesundheitsschädlich bei Verschlucken. Akute Toxizität oral Kategorie 4 Warnung P264, P270, P301+P312, P330, P501
H315 Verursacht Hautreizungen. Hautreizung Kategorie 2 Warnung P264, P280, P302+P352, P321,P332+P313, P362
H319 Verursacht schwere Augenreizung. Schwere Augenreizung Kategorie 2 Warnung P264, P280, P305+P351+P338,P337+P313P
H335 Kann die Atemwege reizen. Spezifische Zielorgan-Toxizität (einmalige Exposition) Kategorie 3 (Atemwegsreizung) Warnung
Sicherheit
P261 Einatmen von Staub vermeiden.
P304+P340 BEI EINATMEN: Die Person an die frische Luft bringen und für ungehinderte Atmung sorgen.
P305+P351+P338 BEI KONTAKT MIT DEN AUGEN: Einige Minuten lang behutsam mit Wasser spülen. Eventuell vorhandene Kontaktlinsen nach Möglichkeit entfernen. Weiter spülen.
P405 Unter Verschluss aufbewahren.

m-Toluylsure Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:

R22:Gesundheitsschädlich beim Verschlucken.

S-Sätze Betriebsanweisung:

S22:Staub nicht einatmen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
S36:DE: Bei der Arbeit geeignete Schutzkleidung tragen.

Beschreibung

m-toluic acid (MTA) , also known as 3-Methylbenzoic acid or m-Toluate, is a benzoic acid derivative having a floral honey odour. Benzoic acids are organic Compounds containing a benzene ring which bears at least one carboxyl group. Benzoic acid occurs naturally in many plants and its name was also derived from a plant source i.e. Gum benzoin. Although it is used as precursor to plasticizers, preservatives such as sodium benzoate, it also has wide application in many pharmaceutical preparations meant for treatment of fungal skin diseases, topical antiseptics, expectorants, analgesics and decongestants. The benzoic acid derivatives are also very useful due to their bacteriostatic and fragrant properties.
MTA is used as intermediate in various chemical reactions, MTA is used as a chemical intermediate in manufacturing of insect repellent and plastic stabilizer in the chemical industry. It is also used in the production of various chemicals like 3-carboxybenzaldehyde, 3-benzoylphenylacetic acid, 3-methylbenzophenone, and N,N-diethyl- 3-methylbenzamide etc.. It is a main component of N,N-diethylm-toluamide, commonly known as DEET, which is first insect repellent that can be applied to skin or clothing and provide protection against mosquitoes and other biting insects.

Chemische Eigenschaften

White to yellowish crystals. Ionization constant 5.3 × 10?5. Slightly soluble in water; soluble in alcohol and ether. Combustible.

Verwenden

Organic synthesis, to form N,N-diethyl-mtoluamide, a broad-spectrum insect repellent.

Definition

ChEBI: A methylbenzoic acid carrying a methyl substituent at position 3.

Allgemeine Beschreibung

White to yellowish crystals or mostly yellow flaky solid (with some white flakes). Has a floral-honey odor.

Air & Water Reaktionen

Fine dust dispensed in air in sufficient concentrations, and in the presence of an ignition source is a potential dust explosion hazard. . Insoluble in water.

Reaktivität anzeigen

m-Toluic acid is a carboxylic acid. Carboxylic acids donate hydrogen ions if a base is present to accept them. They react in this way with all bases, both organic (for example, the amines) and inorganic. Their reactions with bases, called "neutralizations", are accompanied by the evolution of substantial amounts of heat. Neutralization between an acid and a base produces water plus a salt. Carboxylic acids with six or fewer carbon atoms are freely or moderately soluble in water; those with more than six carbons are slightly soluble in water. Soluble carboxylic acid dissociate to an extent in water to yield hydrogen ions. The pH of solutions of carboxylic acids is therefore less than 7.0. Many insoluble carboxylic acids react rapidly with aqueous solutions containing a chemical base and dissolve as the neutralization generates a soluble salt. Carboxylic acids in aqueous solution and liquid or molten carboxylic acids can react with active metals to form gaseous hydrogen and a metal salt. Such reactions occur in principle for solid carboxylic acids as well, but are slow if the solid acid remains dry. Even "insoluble" carboxylic acids may absorb enough water from the air and dissolve sufficiently in m-Toluic acid to corrode or dissolve iron, steel, and aluminum parts and containers. Carboxylic acids, like other acids, react with cyanide salts to generate gaseous hydrogen cyanide. The reaction is slower for dry, solid carboxylic acids. Insoluble carboxylic acids react with solutions of cyanides to cause the release of gaseous hydrogen cyanide. Flammable and/or toxic gases and heat are generated by the reaction of carboxylic acids with diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides. Carboxylic acids, especially in aqueous solution, also react with sulfites, nitrites, thiosulfates (to give H2S and SO3), dithionites (SO2), to generate flammable and/or toxic gases and heat. Their reaction with carbonates and bicarbonates generates a harmless gas (carbon dioxide) but still heat. Like other organic compounds, carboxylic acids can be oxidized by strong oxidizing agents and reduced by strong reducing agents. These reactions generate heat. A wide variety of products is possible. Like other acids, carboxylic acids may initiate polymerization reactions; like other acids, they often catalyze (increase the rate of) chemical reactions. m-Toluic acid is incompatible with strong oxidizers.

Brandgefahr

Flash point data for m-Toluic acid are not available; however, m-Toluic acid is probably combustible.

läuterung methode

Crystallise the acid from water. [Beilstein 9 IV 1712.] Aromatic acid impurities (to <0.05%) can be removed via the (±)--methylbenzylamine salt as described for 2,4-dichlorobenzoic acid [Ley & Yates Organic Process Research & Development 12 120 2008]. The S-benzylisothiuronium salt has m 140o (from aqueous EtOH).

m-Toluylsure Upstream-Materialien And Downstream Produkte

Upstream-Materialien

Downstream Produkte


m-Toluylsure Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

Global( 286)Lieferanten
Firmenname Telefon Fax E-Mail Land Produktkatalog Edge Rate
Dalian Richfortune Chemicals Co., Ltd
86-411-84820922, 84821539
86-411-84821380 sales@richfortunechem.com China 360 57
Anhui Royal Chemical Co., Ltd.
+86-025-86736275
dana.jiang@royal-chem.com CHINA 488 55
Frapp's ChemicalNFTZ Co., Ltd.
+86 (576) 8169-6106
+86 (576) 8169-6105 sales@frappschem.com China 886 50
Capot Chemical Co.,Ltd.
+86 (0)571-855 867 18
+86 (0)571-858 647 95 sales@capotchem.com China 19918 60
Henan DaKen Chemical CO.,LTD.
+86-371-55531817
info@dakenchem.com CHINA 21676 58
Henan Tianfu Chemical Co.,Ltd.
0371-55170693
0371-55170693 info@tianfuchem.com CHINA 20672 55
Mainchem Co., Ltd.
+86-0592-6210733
+86-0592-6210733 sales@mainchem.com CHINA 32447 55
Hefei TNJ Chemical Industry Co.,Ltd.
86-0551-65418684 18949823763
86-0551-65418684 info@tnjchem.com China 1861 55
career henan chemical co
+86-371-86658258
sales@coreychem.com CHINA 30001 58
Chemwill Asia Co.,Ltd.
86-21-51086038
86-21-51861608 chemwill_asia@126.com;sales@chemwill.com;chemwill@hotmail.com;chemwill@gmail.com CHINA 23980 58

99-04-7(m-Toluylsure)Verwandte Suche:


  • RARECHEM AL BO 0048
  • M-TOLUIC ACID
  • M-TOLUYLIC ACID
  • M-METHYLBENZOIC ACID
  • METHYLBENZOIC(M-) ACID
  • beta-methylbenzoic acid
  • 3-TOLUIC ACID
  • 3-METHYLBENZOIC ACID
  • AKOS BBS-00003734
  • M-ToluicAcid>98%
  • META-TOLUIC ACID FOR SYNTHESIS
  • m-Toluicacid,99%
  • 3-Methylbenzoic
  • META-TOLUATE
  • b-Methylbenzoic acid
  • m-Toluic acid,3-Methylbenzoic acid
  • M-Toluic acid, 99% 100GR
  • M-Toluic acid, 99.0%
  • m-Toluic acid ReagentPlus(R), 99%
  • m-Toluic acid Vetec(TM) reagent grade, 98%
  • m-Toluic acid≥ 99% (Assay)
  • 3-Methylbenzoic acid for synthesis
  • M-Methylbenzoate
  • 3-methyl-benzoicaci
  • Benzoicacid,3-methyl-
  • meta-Toluic acid
  • meta-toluicacid
  • m-Tlouicacid
  • m-toluic
  • 99-04-7
  • 1999-04-07
  • 36257
  • 1999-4-7
  • Organic Building Blocks
  • Building Blocks
  • ARYL ACID
  • C8
  • Carboxylic Acids
  • Carbonyl Compounds
  • Aromatic Carboxylic Acids, Amides, Anilides, Anhydrides & Salts
  • Organic acids
  • intermediates
  • -
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