EN 720-1:1999
(Main)Transportable gas cylinders - Gases and gas mixtures - Part 1: Properties of pure gases
Transportable gas cylinders - Gases and gas mixtures - Part 1: Properties of pure gases
The purpose of this part of EN 720 is to define the properties of gases on the basis of four main physical - chemical criteria, i.e. fire potential, toxicity, state of gas and corrosiveness for the purpose of the selection of suitable valve outlets.
Ortsbewegliche Gasflaschen - Gase und Gasgemische - Teil 1: Eigenschaften von Einzel - Gasen
Der Zweck dieses Teils der EN 720 ist es, die Eigenschaften von Gasen auf der Grundlage der vier wichtigsten physikalischen und chemischen Kriterien wie Brennbarkeit, Toxidität, Gaszustand und Korrosivität zu definieren.
Bouteilles à gaz transportables - Gaz et mélanges de gaz - Partie 1: Propriétés des gaz purs
La présente partie de l'EN 720 a pour objet de définir les propriétés des gaz sur la base de quatre critères physico-chimiques principaux, à savoir le potentiel d'inflammation, la toxicité, l'état du gaz et la corrosivité, pour permettre de choisir des raccords de sortie de robinets appropriés.
Premične plinske jeklenke - Plini in zmesi plinov - 1. del: Lastnosti čistih plinov
General Information
Overview
EN 720-1:1999 - Transportable gas cylinders: Gases and gas mixtures - Part 1: Properties of pure gases (CEN) defines how the physical and chemical properties of pure gases are classified for safe use with transportable gas cylinders. The standard’s primary purpose is to specify the properties that affect the choice of cylinder valve outlets and related safety equipment. It groups gases according to four main criteria: fire potential, toxicity, state of gas, and corrosiveness.
Key Topics
- Classification criteria
- Fire potential: flammability and combustibility characteristics relevant to storage and transport.
- Toxicity: health hazards and inhalation risks influencing handling and labeling.
- State of gas: behavior under pressure and temperature (e.g., compressed, liquefied) that affects cylinder selection and fittings.
- Corrosiveness: chemical action on valve materials and cylinder components that determines compatible valve and outlet materials.
- Purpose-driven requirements
- Use of the four criteria to determine suitable valve outlets and connection types for transportable cylinders.
- Guidance to ensure compatibility between gas properties and cylinder fittings to reduce leakage, material degradation, and unsafe releases.
- Scope limits
- Focuses on pure gases; properties of gas mixtures or procedural testing are outside Part 1’s primary remit (other parts of EN 720 or related standards address mixtures).
Applications
- Cylinder manufacturers use EN 720-1 to select appropriate valve designs and materials for different gases.
- Industrial gas suppliers and distributors apply the standard when configuring cylinder valve outlets and preparing gas-specific inventories.
- Safety engineers and HSE professionals reference the classification to assess storage, handling, and emergency response measures.
- Maintenance and fitting technicians rely on the standard to choose compatible connectors, regulators, and leak-prevention systems.
- Regulatory authorities and procurement teams use the documented properties to align procurement and certification with European best practice.
Related Standards
- EN 720-1 is part of the broader EN 720 series addressing gases and gas mixtures for transportable cylinders. Organizations should consult additional parts of EN 720 and other CEN/CENELEC standards covering cylinder construction, testing, labeling, and gas mixture properties for comprehensive compliance.
Keywords: EN 720-1, transportable gas cylinders, properties of pure gases, valve outlets, fire potential, toxicity, corrosiveness, state of gas, CEN.
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2000
3UHPLþQHSOLQVNHMHNOHQNH3OLQLLQ]PHVLSOLQRYGHO /DVWQRVWLþLVWLKSOLQRY
Transportable gas cylinders - Gases and gas mixtures - Part 1: Properties of pure gases
Ortsbewegliche Gasflaschen - Gase und Gasgemische - Teil 1: Eigenschaften von
Einzel - Gasen
Bouteilles a gaz transportables - Gaz et mélanges de gaz - Partie 1: Propriétés des gaz
purs
Ta slovenski standard je istoveten z: EN 720-1:1999
ICS:
23.020.30 7ODþQHSRVRGHSOLQVNH Pressure vessels, gas
MHNOHQNH cylinders
71.100.20 Industrijski plini Gases for industrial
application
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
...
Frequently Asked Questions
EN 720-1:1999 is a standard published by the European Committee for Standardization (CEN). Its full title is "Transportable gas cylinders - Gases and gas mixtures - Part 1: Properties of pure gases". This standard covers: The purpose of this part of EN 720 is to define the properties of gases on the basis of four main physical - chemical criteria, i.e. fire potential, toxicity, state of gas and corrosiveness for the purpose of the selection of suitable valve outlets.
The purpose of this part of EN 720 is to define the properties of gases on the basis of four main physical - chemical criteria, i.e. fire potential, toxicity, state of gas and corrosiveness for the purpose of the selection of suitable valve outlets.
EN 720-1:1999 is classified under the following ICS (International Classification for Standards) categories: 23.020.30 - Pressure vessels, gas cylinders; 23.020.35 - Gas cylinders; 71.100.20 - Gases for industrial application; 75.160.30 - Gaseous fuels. The ICS classification helps identify the subject area and facilitates finding related standards.
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