Heptyl-4-hydroxybenzoat

Bezeichnung:Heptyl-4-hydroxybenzoat

CAS-Nr1085-12-7

Englisch Name:Heptyl 4-hydroxybenzoate

CBNumberCB9666375

SummenformelC14H20O3

Molgewicht236.31

MOL-Datei1085-12-7.mol

Synonyma

Heptyl-4-hydroxybenzoat

Heptyl-4-hydroxybenzoat physikalisch-chemischer Eigenschaften

Schmelzpunkt	46-51 °C
Siedepunkt	338.77°C (rough estimate)
Dichte	1.0717 (rough estimate)
Brechungsindex	1.5800 (estimate)
storage temp.	Sealed in dry,Room Temperature
Löslichkeit	Chloroform (Slightly), Methanol (Slightly)
Aggregatzustand	Solid
pka	8.23±0.15(Predicted)
Farbe	White to Off-White
Wasserlöslichkeit	Soluble in alcohol, phenoxyethanol, propylene glycol. Insoluble in water.
LogP	4.830
CAS Datenbank	1085-12-7(CAS DataBase Reference)
NIST chemische Informationen	Benzoic acid, 4-hydroxy-, n-heptyl ester(1085-12-7)
EPA chemische Informationen	Benzoic acid, 4-hydroxy-, heptyl ester (1085-12-7)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	36/37/38
S-Sätze:	37/39-26-37
RTECS-Nr.	DH2202000
TSCA	Yes
HS Code	29182900

Gefahreninformationscode (GHS)

Heptyl 4-hydroxybenzoate Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
R36/37/38:Reizt die Augen, die Atmungsorgane und die Haut.
S-Sätze Betriebsanweisung:
S37/39:Bei der Arbeit geeignete Schutzhandschuhe und Schutzbrille/Gesichtsschutz tragen.
S26:Bei Berührung mit den Augen sofort gründlich mit Wasser abspülen und Arzt konsultieren.
Beschreibung
Hesperidin is one of a large group of bio-flavonoids isolated from citrus fruits. Flavonoids comprise a group of naturally occurring compounds which are among the most ubiquitous in the plant kingdom. The basic flavone structure consists of 1,4-benzopyrone with a phenyl substitution in the 2-position. Flavonoids differ in the number and position of substitutions on the aromatic rings and in the extent and character of oxidation in the pryone portion of the molecule. Hydroxyl groups enable flavonoids to combine with sugars to form glycosides, and it is in this form that the flavonoids are usually found in nature. Glucose is the most common prosthetic group, although other sugars, as well as glucuronic and galacturonic acids, have been identified. Hesperetin is the aglycone remaining following hydrolysis from the prosthetic group.
Hesperidin complex is a crude hesperidin preparation obtained by extraction of the albedo of orange peel with calcium hydroxide solution. On acidification with hydrochloric acid to pH about 4.5, hesperidin precipitates as a crystalline material along with other co-precipitated flavonoids. The precipitate is washed to remove non-flavonoid ballast, and then spray dried. Average hesperidin content is 72%; naringenin-7-rutinoside, 4.4%; isosakuranetin- 7-rutinoside, 4.2%; and less than 1% naringenin-7-rutinoside-4’- glucoside, eriocitrin, sinensetin, bobeletin, tangeretin, and several unidentified polymethoxylated flavones. It contains no rutin. The powdered precipitate is nonhygroscopic; its weight loss on drying is 2-5%; sulfated ash, 2-4%; and methoxyl content, 3.3-3.7%.
Purified hesperidin is prepared from hesperidin complex by dissolving the crystals in calcium hydroxide solution and precipitating by acidification with hydrochloric acid. More than one cycle of dissolution and precipitation may be needed to achieve the minimum hesperidin content of 80% specified for the purified product. Most purified product is stated to have a hesperidin content of 90%.
Hesperidin is practically tasteless. Presumably through its action as an antioxidant, hesperidin has been reported to delay flavor deterioration of milk-based beverages, thereby extending shelf life by 6-12 months. Hesperidin also is used as a reagent in the refining and reclaiming of lead and zinc, and as a raw material in the production of the dihydrochalcone of neohesperidin, a nonnutritive sweetener.
Chemische Eigenschaften
slightly yellow to cream crystalline powder
Verwenden
Food additive.
Verwenden
n-Heptyl 4-hydroxybenzoate is used for inhibiting microbiological spoilage, used as preservatives, skin care, hair care.
Verwenden
Heptyl 4-hydroxybenzoate is a preservative and antimicrobial agent. It is very slightly soluble in water. It may be used in fermented malt beverages to inhibit microbial spoilage and is permitted in beer. It is also termed n-heptyl-para-hydroxybenzoate.
Definition
ChEBI: Heptyl p-hydroxybenzoate is a benzoate ester.

Heptyl 4-hydroxybenzoate Upstream-Materialien And Downstream Produkte

Heptyl-4-hydroxybenzoat Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

1085-12-7, Heptyl 4-hydroxybenzoate Verwandte Suche:

Send Inquriy