概况
石英分四大类,石英、鳞石英、方石英及熔融石英。它们都是硅氧矿物,但晶体的结构不一样。这叫同质多象。 方石英包括低温方石英和高温方石英。高温方石英一般产在酸性熔岩中。低温方石英呈白或乳白色,玻璃光泽。高温方石英在常温常压下会转变在低温方石英或低温石英方石英块料
性能及应用
1、 优良的光学性质。方石英的折射率1.47,更接近PE、PP及一些树脂的折射率。混合后不遮盖颜料本身的色彩,而用其它填料填充则会使颜料的色彩变浅,失真。方石英
方石英
产品名称: | 方石英 |
CAS Registry Number: | 14464-46-1 |
EINECS: | 238-455-4 |
别名: | 方石英; 白硅石; 二氧化硅; 白炭黑; |
分子结构: | |
分子式: | O2Si |
分子量: | 60.0843 |
密度: | 2.6 g/mL at 25 °C(lit.) |
沸点: | >100 °C(lit.) |
熔点: | 1610 °C(lit.) |
闪点: | °C |
折射率: | 20/D 1.544(lit.) |
风险术语: | 48/20 |
安全声明: | Confirmed carcinogen with experimental carcinogenic and tumorigenic data. Poison by intratracheal route. An inhalation hazard. Human systemic effects by inhalation: cough, dyspnea, fibrosis. About twice as toxic as silica in causing silicosis. See also SILICA, AMORPHOUS FUME; SILICA, AMORPHOUS FUMED; SILICA, AMORPHOUS HYDRATED; SILICA, CRYSTALLINE; SILICA, CRYSTALLINE–QUARTZ; SILICA, CRYSTALLINE–TRIDYMITE; SILICA FLOUR; SILICA, FUSED; SILICA, GEL and AMORPHOUS–PRECIPITATED.Analytical Methods: For occupational chemical analysis use OSHA: #ID-125G or NIOSH: Silica, Crystalline (XRD), 7500; (Color), 7601; (IR), 7602. |
危险品标志: | Xn: Harmful; |
方石英块料
方石英
方石英