GB/T 12684.10-1990
Abolished
T/ZHLSSH 004-2023
Active
Group standards
T/ZHLSSH 004-2023 Industrial Recovery of Sulfuric Acid from Methyl Chloride
T/ZHLSSH 004-2023
Price:
$ 20.00
Basic Information
Standard Code:
T/ZHLSSH 004-2023
Standard Type:
Group standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
-
ICS Name:
Acid
Publish Date:
2023-10-18
Implement Date:
2023-10-20
Scope
Scope: This standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation, storage, and safety for the industrial recovery of sulfuric acid (hereinafter referred to as recovered sulfuric acid) from methyl chloride. This standard applies to the red-brown 75% sulfuric acid recovered during the production of methyl chloride. This standard does not apply to the food and pharmaceutical industries. Main technical content: Item Standard Sulfuric acid, % (m/m) ≥75.0 Methyl chloride, % (m/m) ≤0.20 Ash, % (m/m) ≤0.05 Zinc (Zn), mg/kg ≤10 Lead (Pb), mg/kg ≤5 Mercury (Hg), mg/kg ≤0.1 Arsenic (As), mg/kg ≤5 Total chromium (Cr), mg/kg ≤10 Hexavalent chromium (Cr6+), mg/kg ≤5
Development Information
Related Standards
GB/T 12684.11-1990
Abolished
GB/T 12684.11-1990 Boric acid for industrial use—Determination of cobalt content
GB/T 12684.1-1990
Replaced
GB/T 12684.1-1990 Boric acid for industrial use—Determination of boric acid content
GB/T 12684.2-1990
Replaced
GB/T 12684.2-1990 Boric acid for industrial use—Determination of insoluble substance content in water
GB/T 12684.3-1990
Replaced
GB/T 12684.3-1990 Boric acid for industrial use—Determination of sulphate content by reduction and titrimetry
GB/T 12684.4-1990
Replaced