Volatile organic liquids — Determination of boiling range of organic solvents used as raw materials
Volatile organic liquids — Determination of boiling range of organic solvents used as raw materials
This document specifies a method for determining the boiling range of liquids that boil between 30 °C and 300 °C at normal pressure, and that are chemically stable and do not corrode the apparatus during the distillation. The method is applicable to organic liquids such as hydrocarbons, esters, alcohols, ketones, ethers and similar products. NOTE 1 The method differs from that described in ISO 918 with respect to the volume of the distillation flask, the type of cooler and the distillation receiver. NOTE 2 The method differs from that specified in ISO 3405 with respect to the volume of the distillation flask and the diameter of the hole in the flask support.
ISO 4626:2023 specifies a standardized laboratory method for determining the boiling range of volatile organic liquids used as raw materials. The procedure is intended for chemically stable, non‑corrosive organic solvents with normal‑pressure boiling points between 30 °C and 300 °C. Typical product classes covered include hydrocarbons, esters, alcohols, ketones, ethers and similar solvents. The test is a simple batch distillation using a defined flask size and controlled operating conditions to record initial boiling point, dry point and end point.
Стандарты, упомянутые в описании
ISO 4626 is practical for:
Using ISO 4626 helps ensure consistent, comparable boiling‑range results, aids process control, supports product specification compliance, and improves safety handling decisions for volatile organic liquids.