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Fuming sulfuric acid

【English name】:Oleum, Sulphuric acid fuming
【Chinese name】:20%Fuming sulfuric acid, 105 acid
【CAS】:7664-93-9
【Molecular formula】:H2SO4·xSO3
【Quality standard】:

Item

National standard

Index

Sulfuric acid % ≥

104.5

104.5-105.2

Ignition residue % ≤

0.03

0.02

Iron content % ≤

0.010

0.008

As % ≤

0.0001

0.0001

【Use】:Widely used in synthetic dyes, explosive and pharmaceutical industry.
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