ISO 1897-11-1983 rus PDF

Full title and description

St ISO 1897-11-1983 rus — Phenol, o-cresol, m-cresol, p-cresol, cresylic acid and xylenols for industrial use — Methods of test — Part 11: Determination of crystallizing point (Excluding cresylic acid and xylenols). This entry references the Russian-language edition/scan of the original ISO text (designation often rendered as "Ст ISO 1897-11-1983 rus").

Abstract

This standard specifies a method for determining the crystallizing point of phenol and cresols (excluding cresylic acid and xylenols). The procedure may be performed on material as received or on a dried sample (drying to be carried out according to ISO 2208). The principle is cooling a test portion under defined conditions and observing the temperature at which crystallization occurs; a simplified crystallization-point apparatus is illustrated in the standard.

General information

• Status: Withdrawn.
• Publication date: November 1983 (Edition 1, 1983-11).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 71.080.40, 71.080.90 (chemical analysis / industrial chemicals).
• Edition / version: Edition 1 (1983).
• Number of pages: 4.

Scope

Defines a laboratory test method to determine the crystallizing point (melting/crystallization temperature) of phenol and the o-, m- and p-cresols intended for industrial use. The procedure excludes cresylic acid and xylenols and covers preparation of test portions (including optional drying per ISO 2208), cooling under specified conditions and temperature observation using a crystallization-point apparatus adapted for these products.

Key topics and requirements

• Procedure for preparing test portions, including reference to drying method (ISO 2208) where applicable.
• Principle: controlled cooling of liquid or liquefied sample and observation of temperature during crystallization.
• Specification of a simplified crystallization-point apparatus tailored to phenol/cresol properties.
• Applicability limited to phenol and cresols; cresylic acid and xylenols are explicitly excluded.
• Short technical standard (concise test method; 4 pages) intended for routine laboratory use and quality control.

Typical use and users

Used by chemical manufacturers, quality control and analytical laboratories, material specification authors, and regulatory or inspection bodies concerned with the physical characterization of industrial phenolic products. Typical activities include routine QC testing, acceptance testing of incoming materials, and reference-method use in comparative studies or method validation.

Related standards

This part is one of multiple parts in the ISO 1897 series covering methods of test for phenol, cresols, cresylic acid and xylenols (other parts cover water determination, distillation characteristics, residues, color, specific content determinations, etc.). Many parts of the ISO 1897 series have been withdrawn; consult the series list for individual part status and any replacements. Examples include ISO 1897-2, -3, -4, -5, -6, -7, -8, -9, -10, -12 and -13 as related test-method parts.

Keywords

ISO 1897-11, phenol, cresol, crystallizing point, crystallization point, test method, ISO 2208 (drying), industrial chemicals, quality control, Ст ISO 1897-11-1983 rus.

FAQ

Q: What is this standard?

A: It is Part 11 of the ISO 1897 series (Edition 1, 1983) giving a laboratory method to determine the crystallizing point of phenol and o-, m-, p-cresols for industrial use; a Russian-language edition/scan is commonly catalogued as "Ст ISO 1897-11-1983 rus."

Q: What does it cover?

A: The method covers sample preparation (including optional drying per ISO 2208), the cooling procedure, observation of crystallization temperature under defined conditions, and a simplified apparatus for the determination. It explicitly excludes cresylic acid and xylenols.

Q: Who typically uses it?

A: Chemical producers of phenol/cresols, independent analytical and QC laboratories, standards bodies compiling product specifications, and regulators or purchasers who require a standard test method for crystallizing point determination.

Q: Is it current or superseded?

A: This part (ISO 1897-11:1983) is listed as Withdrawn. Many parts of the ISO 1897 series have been withdrawn (some without direct replacement); users should check current national or international standards and any successor methods before relying on it for regulatory or contractual purposes.

Q: Is it part of a series?

A: Yes — it is Part 11 of the ISO 1897 series of test methods for phenol, cresols, cresylic acid and xylenols. The series contains multiple parts addressing different test types (water, distillation, residues, color, specific constituents, etc.).

Q: What are the key keywords?

A: Phenol; cresol (o-, m-, p-); crystallizing point; crystallization temperature; test method; ISO 1897-11; drying (ISO 2208); quality control; industrial chemicals; Ст ISO 1897-11-1983 rus.