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Is 98% acid (concentrated sulfuric acid) considered fuming sulfuric acid? Should the fire hazard be classified as Category B? ?

2017-08-02View Original

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Is 98% acid (concentrated sulfuric acid) considered fuming sulfuric acid? Should the fire hazard be classified as Category B? ?
Reply #22017-08-02
Greater than 100%, and it is also not a flammable liquid
Reply #32017-08-02
Fuming sulfuric acid is classified as Category B, while concentrated sulfuric acid is classified either as Category B or Category C
Reply #42017-08-02
So, does that 98 acid belong to Category B or Category C? ? ?
Reply #52017-08-02
Acid 98 is usually considered as a pentane-type compound.
Reply #62017-08-02
For Category B, there’s no doubt about it – they are not strong oxidizers of Category A
Reply #72017-08-02
Excluding fuming sulfuric acid, these are two different concepts
Reply #82017-08-03
Concentrated sulfuric acid is definitely not fuming sulfuric acid; fuming sulfuric acid is formed when concentrated sulfuric acid absorbs sulfur trioxide, and their appearances are quite different
Reply #92017-08-03
There are two types: concentrated sulfuric acid and fuming sulfuric acid. Fuming sulfuric acid is a sulfuric acid solution of sulfur trioxide, and it comes in different grades depending on its concentration

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Translated at 2026-07-21 04:06:07

Original: https://bbs.hcbbs.com/thread-1811201-1-1.html

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