ISO 1041-1973 PDF

Full title and description

ISO 1041:1973 — Essential oils — Determination of freezing point. This International Standard specifies a laboratory method for determining the freezing point of essential oils (short technical method, apparatus and observation procedure).

Abstract

The standard describes slow, progressive cooling of an essential oil sample and observation of temperature variations as the oil passes from liquid to solid; it specifies the basic apparatus (nested test tubes and thermometer arrangement) and the observation procedure to record the freezing point. The method is short (2 pages) and intended for routine determination of freezing points for most essential oils.

General information

• Status: Published (International Standard — confirmed in ISO review cycles).
• Publication date: December 1973 (1973-12).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 71.100.60 (Essential oils).
• Edition / version: Edition 1 (1973).
• Number of pages: 2 pages.

Scope

This standard specifies a method of determining the freezing points of essential oils. It is intended for general-purpose freezing-point determination of essential oils; the method explicitly excludes the special case of essential oil of rose. The standard refers to relevant sampling and sample-preparation references (ISO/R 356 and ISO 212).

Key topics and requirements

• Procedure: slow, progressive cooling with direct temperature observation to detect the liquid–solid transition and record the freezing point.
• Apparatus: nested wide-mouthed container and test-tube arrangement with a thermometer inserted in the inner tube (simple laboratory glassware).
• Sample preparation and sampling: points users should follow ISO/R 356 (preparation of sample) and ISO 212 (sampling) as normative references.
• Applicability: suitable for most essential oils but excludes certain special cases (e.g., rose oil).

Typical use and users

Used by analytical chemists, quality-control laboratories, essential-oil producers, fragrance and flavor laboratories, and standards organizations for routine physical property testing of essential oils and for documentation of product specifications. The method is suitable where a simple, reproducible freezing-point measurement is required.

Related standards

Normative references and related ISO documents include ISO/R 356 (Methods of test — Preparation of sample) and ISO 212 (Essential oils — Sampling). The standard is published under the work of ISO/TC 54 (Essential oils).

Keywords

essential oils, freezing point, physical property, laboratory method, ISO 1041, sample preparation, ISO/TC 54.

FAQ

Q: What is this standard?

A: ISO 1041:1973 is an International Standard that defines a laboratory method for determining the freezing point of essential oils. It is a short procedural method published by ISO in December 1973.

Q: What does it cover?

A: It covers the apparatus, sample arrangement and the observational procedure for measuring the freezing point through slow progressive cooling; it applies to most essential oils but excludes specific cases such as essential oil of rose. Normative references for sampling and sample preparation are cited within the standard.

Q: Who typically uses it?

A: Analytical and quality-control laboratories, essential-oil manufacturers, fragrance and flavor industry laboratories, and standardization bodies use the method for routine physical testing and specification-setting.

Q: Is it current or superseded?

A: ISO 1041:1973 is a published International Standard from 1973; ISO’s lifecycle records show it as published and subject to periodic review/confirmation. Users should check the ISO catalogue or their national standards body for the current status or any national adoptions before use.

Q: Is it part of a series?

A: It is a standalone ISO method within the set of standards maintained by ISO/TC 54 (Essential oils) and is referenced alongside other essential-oil test methods (the standard cross-references ISO/R 356 and ISO 212).

Q: What are the key keywords?

A: Essential oils; freezing point; physical test method; sample preparation; ISO 1041; ISO/TC 54.