ISO 15859-7:20 04规定了无水肼（N2H4）的组成和物理性质的限度，并建立了适用于无水肼组成验证的取样和测试要求。 ISO 15859-7:20 04适用于无水肼推进剂，预期用作空间系统推进剂系统以及飞行硬件和地面设施、系统和设备的燃料，等级为:标准【正常生产和质量控制（适用于大多数用途）】、单推进剂【严格控制特定杂质的正常产品（仅适用于需要延长催化剂寿命的单推进剂催化发动机）】和高纯度（严格控制特定杂质的特殊生产）。 ISO 15859-7:20 04仅适用于此处规定限度内的进水。肼可以是液体类型。 ISO 15859-7:20 04适用于任何取样操作，以确保当流体进入运载火箭或航天器时，流体成分符合下文提供的限值或为特定用途商定的任何技术规范。

ISO 15859-7:2004 specifies limits for the composition and physical properties of anhydrous hydrazine (N₂H₄) and establishes the sampling and test requirements applicable for the verification of the anhydrous hydrazine composition. ISO 15859-7:2004 is applicable to anhydrous hydrazine propellant, intended for use as fuel in propellant systems of space systems as well as in both flight hardware and ground facilities, systems, and equipment, of grades: standard [normal production and quality control (suitable for most uses)], monopropellant [normal product with strict control of specified impurities (to be specified only for monopropellant catalytic engines where extended life of the catalyst is desired)] and high purity (special production with strict control of specified impurities). ISO 15859-7:2004 is applicable to influents only within the specified limits herein. Hydrazine may be of the liquid type. ISO 15859-7:2004 is applicable to any sampling operation required to ensure that, when the fluid enters the launch vehicle or spacecraft, the fluid composition complies with the limits provided hereafter or with any technical specification agreed to for a particular use.