1-Naphthoesure

Bezeichnung:1-Naphthoesure

CAS-Nr86-55-5

Englisch Name:1-Naphthoic acid

CBNumberCB6475509

SummenformelC11H8O2

Molgewicht172.18

MOL-Datei86-55-5.mol

Synonyma

1-Naphthoesure

1-Naphthoesure physikalisch-chemischer Eigenschaften

Schmelzpunkt	157-160 °C (lit.)
Siedepunkt	300 °C (lit.)
Dichte	1.398
Brechungsindex	1.4600 (estimate)
Flammpunkt	195°C
storage temp.	Sealed in dry,Room Temperature
Löslichkeit	Slightly soluble in hot water; freely soluble in hot ethanol, ether
pka	3.7(at 25℃)
Aggregatzustand	Powder
Farbe	Slightly yellow to brown
Wichte	1.398
Säure-Base-Indikators(pH-Indikatoren)	Non& uorescence (2.5) to blue & uorescence (3.5)
Wasserlöslichkeit	Freely soluble in hot alcohol and ether. Slightly soluble in hot water.
maximale Wellenlänge (λmax)	293nm
Merck	14,6381
BRN	1908896
Stabilität	Stable. Incompatible with strong bases, strong oxidizing agents.
Major Application	Photoresists, recording materials, waveguides, battery, ink, rubber, plastic films, agriculture, cosmetics, Sunscreen, method for preserving food, drugs, biosensors
InChIKey	LNETULKMXZVUST-UHFFFAOYSA-N
CAS Datenbank	86-55-5(CAS DataBase Reference)
NIST chemische Informationen	1-Naphthalenecarboxylic acid(86-55-5)
EPA chemische Informationen	1-Naphthalenecarboxylic acid (86-55-5)

Sicherheit

Kennzeichnung gefährlicher	Xi
R-Sätze:	36/37/38
S-Sätze:	26-36-24/25-37
WGK Germany	2
RTECS-Nr.	QL0960000
TSCA	Yes
HS Code	29163900

Gefahreninformationscode (GHS)

1-Naphthoic acid Chemische Eigenschaften,Einsatz,Produktion Methoden

R-Sätze Betriebsanweisung:
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:DE: Bei der Arbeit geeignete Schutzkleidung tragen.
S24/25:Berührung mit den Augen und der Haut vermeiden.
S37:Geeignete Schutzhandschuhe tragen.
Chemische Eigenschaften
Off-white to beige powder
Verwenden
1-Naphthoic acid is used as an intermediate for the synthesis of pharmaceuticals, photochemicals, plant growth hormones, dyes and other organic compounds.
Definition
ChEBI: 1-naphthoic acid is a naphthoic acid carrying a carboxy group at position 1. It has a role as a fungal xenobiotic metabolite and a bacterial xenobiotic metabolite. It is a conjugate acid of a 1-naphthoate.
Application
1-Naphthoic acid has been used as a novel asymmetric chromophore for exciton-coupled circular dichroism (ECCD), which can be used to induce chirality^[1]. 1-Naphthoic acid has also been used as an organic synthesis reactant for the preparation of naphthanones, isocoumarin derivatives, and naphthalene carboxylic acid cellulose. Microcrystalline cellulose (MCC) and cellulose nanofibres (CNFs) were modified by esterification using 1-Naphthoic acid in a toluenesulfonyl chloride/pyridine solvent system to produce fluorophore labelled cellulose. Cellulose modification decreases the degradation temperature and hence the thermal stability of cellulose. After induction of naphthoate side chains, a glass transition temperature (Tg) of about 160 °C was observed. Cellulose naphthalenecarboxylate shows a strong ultraviolet (UV) absorption peak at 282 nm and has good fluorescent properties. Therefore, it can be used for fluorescent coatings, sensors and packaging^[2].
Synthesis Reference(s)
Organic Syntheses, Coll. Vol. 2, p. 425, 1943
Tetrahedron Letters, 22, p. 1013, 1981 DOI: 10.1016/S0040-4039(01)82853-7
läuterung methode
Crystallise the acid from toluene (3mL/g) (charcoal), pet ether (b 80-100o), or aqueous 50% EtOH. The amide has m 202o (from EtOH). [Beilstein 9 IV 2402.]
Einzelnachweise
[1] BIANCA SCHREDER. 1-Naphthoic acid: A new type of asymmetric chromophore for exciton-coupled circular dichroism (ECCD)[J]. Tetrahedron, asymmetry, 1996, 7 6: Pages 1543-1546. DOI:10.1016/0957-4166(96)00176-0.
[2] LEASE J, SAHIN Z M, FARID M A A, et al. Synthesis of Nanocellulose Derivatives through Esterification with Naphthoic Acid as a Fluorescent Additive[J]. ACS Sustainable Chemistry & Engineering, 2024, 343 1. DOI:10.1021/acssuschemeng.4c04206.

1-Naphthoic acid Upstream-Materialien And Downstream Produkte

1-Naphthoesure Anbieter Lieferant Produzent Hersteller Vertrieb Händler.

86-55-5, 1-Naphthoic acid Verwandte Suche:

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