Radioactive waste immobilization is a means to limit the release of radionuclides from various waste streams into the environment over a timescale of hundreds to many thousands of years. Incorporation of radionuclide-containing wastes into borosilicate glass during vitrification is one potential route to accomplish such immobilization. To facilitate comparisons and assessments of reproducibility across experiments and laboratories, a six-component borosilicate glass (Si, B, Na, Al, Ca, Zr) known as the International Simple Glass (ISG) was developed by international consensus as a compromise between simplicity and similarity to waste glasses. Focusing on a single glass composition with a multi-pronged approach utilizing state-of-the-art, multi-scale experimental and theoretical tools provides a common database that can be used to assess relative importance of mechanisms and models. Here we present physical property data (both published and previously unpublished) on a single batch of ISG, which was cast into individual ingots that were distributed to the collaborators. Properties from the atomic scale to the macroscale, including composition and elemental impurities, phase purity, density, thermal properties, mechanical properties, optical and vibrational properties, and the results of molecular dynamics simulations are presented. In addition, information on the surface composition and morphology after polishing is included. Although the existing literature on the alteration of ISG is not extensively reviewed here, the results of well-controlled static alteration experiments are presented here as a point of reference for other performance investigations.

放射性废物的固定化是一种在数百到数千年的时间范围内限制放射性核素从各种废物流中释放到环境中的一种手段。在玻璃化过程中将含放射性核素的废物掺入硼硅酸盐玻璃中是实现这种固定化的一种可能途径。为了便于在实验和实验室之间进行可重复性的比较和评估，国际共识开发了六种成分的硼硅酸盐玻璃（Si，B，Na，Al，Ca，Zr），称为国际简单玻璃（ISG），作为简单性之间的折衷方案。和废眼镜的相似之处。通过采用最新技术的多管齐下方法专注于单一玻璃成分，多尺度的实验和理论工具提供了一个公共数据库，可用于评估机制和模型的相对重要性。在这里，我们以ISG的单个批次呈现物理属性数据（已发布和之前未发布），这些数据被铸造成单独的锭，并分发给合作者。给出了从原子尺度到宏观尺度的性质，包括组成和元素杂质，相纯度，密度，热性质，机械性质，光学和振动性质，以及分子动力学模拟的结果。另外，还包括有关抛光后的表面组成和形态的信息。尽管此处未对有关ISG更改的现有文献进行广泛的评论，