ISO 3137:1974

Name: ISO 3137:1974 — Anhydrous hydrogen fluoride for industrial use — Sampling
SKU: ISO 3137:1974
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Anhydrous hydrogen fluoride for industrial use — Sampling

Название (английский):

ISO 3137:1974

Anhydrous hydrogen fluoride for industrial use — Sampling

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 6
Дата публикации:: 1 декабря 1974 г.
Издание:: ISO IS 3137 edition 1 version 1
ICS:: 71.060.30

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Описание (английский):

This part contains a method for taking laboratory samples intended for the determination of the water content and the preparations of the test samples. Contains instructions for handling with the material. Applicable for taking samples of this highly corrosive liquid from road and rail tanks, drums and cylinders. The principle consists in allowing the liquid of one of these containers to flow in a cooled evacuated stainless steel cylinder or cylinders of not less than 1 kg total capacity. The apparatus for sampling is shown in a figure. Part Two deals with the preparation of the test sample by introduction of the liquid into a polyolefin cylinder containing two layers of ice. Has also been approved by the IUPAC.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 3137:1974 - "Anhydrous hydrogen fluoride for industrial use - Sampling" specifies standardized methods for taking laboratory samples of anhydrous hydrogen fluoride (HF) and for preparing test samples for subsequent analysis (notably water content). The standard covers safe handling, the sampling principle, required apparatus and step-by-step procedures for: (1) collecting a laboratory sample from road/rail tanks, drums or cylinders, and (2) preparing a test sample in a polyolefin vessel with ice. This document has also been approved by IUPAC.

Key topics and technical requirements

Scope & applicability

Sampling from bulk containers: road and rail tanks, drums and cylinders.
Preparation of test samples for water-content and other determinations.

Safety warnings

HF is highly corrosive, boils at 19.5 °C, attacks glass, and produces toxic/irritant vapour.
Mandatory use of a well‑ventilated fume cupboard, full head/face protection, rubber gloves, boots and gown. In case of contact: flood with water and seek immediate medical attention.

Sampling principle

Allow liquid HF to flow into one or more cooled, evacuated stainless‑steel cylinders with a total capacity of at least 1 kg.

Apparatus & key components

Stainless steel sample cylinder(s), coupling tubes, stainless steel valves and unions.
Vacuum pump capable of rapidly producing about 0.6 kPa for evacuation.
Cooling to below 15 °C during evacuation/filling.
Cleaning/drying: parts washed, dried in an oven at ~110 °C for 8–12 hours and stored in oven until use.

Test-sample preparation

Transfer HF into a polyolefin dilution vessel containing two layers of crushed ice (approx. 40 g each) using a polyolefin delivery tube and copper connecting tube.
Calculate concentration by mass: concentration (%) = m1 / (m1 + m2) × 100, where m1 = mass of HF introduced, m2 = mass of ice.

Procedural controls

Purging, controlled valve sequencing, and careful weighing to the nearest 0.1 g are specified.

Applications and users

Organizations that handle, transport or analyze industrial HF:

Chemical manufacturers and processors
Transport and logistics companies (road/rail tank operators)
Analytical and quality‑control laboratories determining water or impurity contents
Safety, compliance and regulatory teams implementing sampling protocols

Practical uses:

Producing representative laboratory samples for Karl Fischer or other water analyses
Ensuring safe, repeatable sampling for QA/QC and regulatory compliance

Related standards

ISO 3138 - Determination of non‑volatile acid content (titrimetric)

ISO 3699 - Determination of water content (Karl Fischer)

ISO 3700 - Determination of water content (conductimetric)

ISO 3701 - Determination of fluorosilicic acid content

ISO 3702 - Determination of sulfur dioxide content

ISO 3139 - Sampling and methods of test for aqueous hydrofluoric acid

Keywords: ISO 3137:1974, anhydrous hydrogen fluoride, HF sampling, laboratory sampling, sample preparation, polyolefin vessel, stainless steel cylinder, HF safety, water content analysis.

ISO 3137:1974

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Applications and users

Related standards

Технические детали

ISO 3138:1974

Anhydrous hydrogen fluoride for industrial use — Determination of non-volatile acid content — Titrimetric met…

ISO 3699:1976

Anhydrous hydrogen fluoride for industrial use — Determination of water content — Karl Fischer method

ISO 37005:2024

Governance of organizations — Developing indicators for effective governance

ISO 370:1975

Toleranced dimensions — Conversion from inches into millimetres and vice versa

ISO 3702:1976

Anhydrous hydrogen fluoride for industrial use — Determination of sulphur dioxide content — Iodometric method

ISO 3139:1976

Aqueous hydrofluoric acid for industrial use — Sampling and methods of test