REGISTER

FR
Search
×
FR

Placeholder headline

This is just a placeholder headline

API STD 668: Brazed Aluminum Plate-fin Heat Exchangers for General Refinery Services

$

386

BUY NOW

Placeholder headline

This is just a placeholder headline

MSS SP-134-2025: Valves for Cryogenic Service, including Requirements for Body/Bonnet Extensions

$

315

BUY NOW

Placeholder headline

This is just a placeholder headline

MSS SP-150-2025: Valves for Use in Hydrogen Peroxide Service

$

189

BUY NOW

Placeholder headline

This is just a placeholder headline

API STD 673: Centrifugal Fans for Petroleum, Chemical and Gas Industry Services: Edition 3

$

300

BUY NOW

Placeholder headline

This is just a placeholder headline

API STD 674: Positive Displacement Pumps-Reciprocating: 3rd Edition

$

363

BUY NOW

Placeholder headline

This is just a placeholder headline

API MPMS CH 22.3: Testing Protocol for Flare Gas Metering: Edition 2

$

193

BUY NOW

ISO 3794:1976

ISO 3794:1976 Essential oils (containing tertiary alcohols) – Estimation of free alcohols content by determination of ester value after acetylation

CDN $76.00

SKU: 72f5ceafe6dd Category:

Description

The estimation is carried out by acetylation of the essential oil by acetyl chloride and acetic anhydride, in the presence of dimethylaniline. The acetylated oil is isolated and dried and the ester value is determined. The free alcohols content is calculated taking into account the ester values of the same but non-acetylated essential oil. This method is applicable to essential oils containing an appreciable proportion of tertiary alcohols, namely of linalol and terpineol. It is not applicable to essential oils containing appreciable proportions of phenols, anthranilates, lactones and aldehydes.

Edition

1

Published Date

1976-12-01

Status

PUBLISHED

Pages

2

Language Detail Icon

English

Format Secure Icon

Secure PDF

Abstract

The estimation is carried out by acetylation of the essential oil by acetyl chloride and acetic anhydride, in the presence of dimethylaniline. The acetylated oil is isolated and dried and the ester value is determined. The free alcohols content is calculated taking into account the ester values of the same but non-acetylated essential oil. This method is applicable to essential oils containing an appreciable proportion of tertiary alcohols, namely of linalol and terpineol. It is not applicable to essential oils containing appreciable proportions of phenols, anthranilates, lactones and aldehydes.

Previous Editions

Can’t find what you are looking for?

Please contact us at: