免费观看美女裸身视频,办公室被绑奶头调教羞辱ol,亚洲av成人精品一区二区三区,精品少妇人妻av无码专区不卡,国产精品久久久久无码AV色戒
ABOUT US
About us
Culture
PRODUCTS
Solid sodium methylate
Solid sodium ethylate
Liquid sodium methylate
Liquid sodium ethylate
Solid sodium tert-butoxide
Metal sodium
Solid magnesium ethoxide
NEWS
VIEW
CONTACT US
CHINESE
Metal sodium
1, Product name: Sodium
2, Molecular formula: Na Molecular weight: 22.99
Index name
Index
Packing
Appearance
silvery white cylinder
20kg, 25kg bag, drum
Na %
≥99.8%
K %
≤0.03%
Ca %
≤0.04%
Fe %
≤0.01%
Previous product:
Solid magnesium ethoxide
Next product:
Solid sodium tert-butoxide