ISO 7201-1:1989

Overview

ISO 7201-1:1989 defines specifications and test requirements for halogenated hydrocarbon fire extinguishing media - specifically Halon 1211 and Halon 1301. The standard establishes minimum quality criteria and test methods to verify that supplied halons possess appropriate extinguishing capability and chemical quality for sale and distribution as fire‑extinguishing agents. It does not cover conditions of use or equipment requirements for portable extinguishers or fixed installations.

Key Topics

• Scope and purpose: Standardizes the evaluation of Halon 1211 (bromochlorodifluoromethane) and Halon 1301 (bromotrifluoromethane) as fire‑extinguishing media and specifies testing and acceptance criteria.
• Sampling: Samples are to be taken from the liquid phase of the manufacturer's shipping container using the method in ISO 3427.
• Analytical tests: Required properties and associated test methods include:
  • Purity - determined by gas–liquid chromatography.
  • Acidity - determined by the method in ISO 3363.
  • Water content - determined by Karl Fischer or equivalent.
  • Non‑volatile residue - determined by ISO 5789.
  • Halogen ions - chemical test (methanolic AgNO3) to detect halide ions.
  • Suspended matter / sediment - visual inspection for particles.
• Packaging and labelling: Containers must be compatible with the medium, comply with applicable regulations, and carry key markings such as supplier name, identification of Halon 1211 or 1301, the ISO 7201-1 reference, package ID and recommended storage precautions.
• Informative Annex: Annex A provides general physical properties (boiling point, critical data, densities, etc.) and notes on electrical conductivity relevant to use around live electrical equipment.

Applications

• Ensuring supplied halons meet quality and safety requirements before distribution or incorporation into fire suppression systems.
• Supporting procurement specifications for suppliers and quality control checks in production and storage.
• Informing regulatory and compliance documentation for transportation and labelling of halogenated fire‑extinguishing agents.

Related Standards

• ISO 3427 - Sampling of liquefied halogenated hydrocarbons
• ISO 3363 - Determination of acidity for fluorochlorinated hydrocarbons
• ISO 5789 - Determination of non‑volatile residue for fluorinated hydrocarbons

ISO 7201-1:1989 is primarily a materials and testing specification. For requirements on equipment, discharge conditions, or operational use of Halon agents in extinguishers and fixed installations, consult subsequent ISO standards or equipment‑specific international and national standards.