基本信息
物化性质
外观与性状:白色晶体
沸点:126 °C
熔点:65-68 °C
闪点:126°C
折射率:1.449
水溶解性:1580 g/L (25 ºC)
稳定性:Stable. Strong oxidizer - contact with combustible materials may cause fire. Hygroscopic (also reported to be deliquescent!). Incompatible with combustible material, strong reducing agents, strong acids.
储存条件:Do not store near combustible materials. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
沸点:126 °C
熔点:65-68 °C
闪点:126°C
折射率:1.449
水溶解性:1580 g/L (25 ºC)
稳定性:Stable. Strong oxidizer - contact with combustible materials may cause fire. Hygroscopic (also reported to be deliquescent!). Incompatible with combustible material, strong reducing agents, strong acids.
储存条件:Do not store near combustible materials. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.
安全信息
RTECS号:OE5250000
安全说明:S17-S26-S36-S37/39
WGK Germany:3
危险类别码:R36/37/38; R8
海关编码:28469000
危险品运输编码:UN 1477 5.1/PG 2
危险类别:5.1
包装等级:III
危险品标志:O; Xi
危险标志:GHS03, GHS07
信号词:Danger
危险性描述:H272; H315; H319; H335
危险性防范说明:P220; P261; P305 + P351 + P338
安全说明:S17-S26-S36-S37/39
WGK Germany:3
危险类别码:R36/37/38; R8
海关编码:28469000
危险品运输编码:UN 1477 5.1/PG 2
危险类别:5.1
包装等级:III
危险品标志:O; Xi
危险标志:GHS03, GHS07
信号词:Danger
危险性描述:H272; H315; H319; H335
危险性防范说明:P220; P261; P305 + P351 + P338
生产方法及用途
生产方法
富集法以氯化稀土或稀土硫酸铵复盐为原料,提取部分铈后,镧得到相对富集。将稀土硫酸铵复盐用氢氧化钠溶解,经空气氧化其中锑,用稀硝酸浸出,分离富铈渣,溶液为富镧母液,再经萃取分离,经结晶得富集硝酸镧。
用途
1.用于生产光学玻璃,汽灯纱罩及荧光粉、防腐剂。 2.陶瓷电容器添加剂、石油精炼催化剂。
富集法以氯化稀土或稀土硫酸铵复盐为原料,提取部分铈后,镧得到相对富集。将稀土硫酸铵复盐用氢氧化钠溶解,经空气氧化其中锑,用稀硝酸浸出,分离富铈渣,溶液为富镧母液,再经萃取分离,经结晶得富集硝酸镧。
用途
1.用于生产光学玻璃,汽灯纱罩及荧光粉、防腐剂。 2.陶瓷电容器添加剂、石油精炼催化剂。