国产在线一区二区视频_欧美中日韩免费观看网站}_日b视频在线观看_在线可以免费观看的a√片_亚洲综合另类小说色_在线观看播放另类国产小视频_久久精品国产精品九九_中文字幕在线观视频2020_日本东京热加勒比有码视频一区_免费毛儿一区二区十八岁

Industrial grade sulfuric acid

2019-09-23 486

1、 Overview

Molecular formula: H2SO4

Properties: sulfuric acid is a colorless, transparent and oily liquid. Boiling point 270 ℃. Freezing point 10.4 ℃. Specific gravity 1.82-1.84. Sulfuric acid is one of the most active inorganic acids. It can react with almost all metals and their oxides and hydroxides to form sulfate. It can also interact with salts of other inorganic acids. Sulfuric acid has strong water absorption and oxidation. Contact with human body can cause serious burns. Sulfuric acid dissolves in water and gives off a lot of dilution heat. Therefore, in operation, only acid can be added to water, and water must not be added to acid! To prevent local overheating of acid liquid surface from causing explosion and acid spraying accident.


2、 Purpose:

Sulfuric acid is one of the important raw materials in chemical industry. It is widely used in chemical raw materials, dyes, medicine, food, printing and dyeing, leather, metallurgy and other industries. It is mainly used to make inorganic chemical fertilizer, especially phosphate fertilizer.


3、 Product quality:GB 534-65

Appearance oily transparent liquid

H2SO4 ≥ 98.0%

Residue ≤ 0.1%


4、 Packaging and storage:

30kg plastic barrel or tank car transportation.


5、 Precautions:

It can be stacked separately in the open air to avoid the sun. Avoid direct contact with eyes and skin to avoid burns. Operators should wear protective clothing, rubber gloves and glasses.