GB/T 534-2024 in English
VALIDSulphuric acid for industrial use
- Issued on:2024-12-31
- Implemented on:2025-07-01
- File Format:PDF
- Delivery:Within 1 day
$338.00
| Standard No: | GB/T 534-2024 |
| Document status: | VALID |
| Title in English: | Sulphuric acid for industrial use |
| Title in Chinese: | 工业硫酸 |
| Language: | English |
| File Format: | Electronic (PDF) |
| Delivery: | Within 1 day |
| Issued on: | 2024-12-31 |
| Implemented on: | 2025-07-01 |
| Superseding: |
GB/T 534-2014 Sulphuric acid for industrial use
|
| ICS Classification: | 71.060.30-Acids |
| Chinese Classification: | G11-Inorganic acid and alkali |
| Professional Classification: | GB-National Standard |
| Related Keywords: | industrial sulfuric acid
sulfuric acid sulphuric acid sulfuric acid ≤0.001 % -0.2 % dichromate-nitric acid |
| Related Topics: | GB/T 534 2014
GB/534 gb/t534-2014 Industrial cadmium sulfate Mercury in sulfuric acid Chlorine in industrial sulfuric acid Sulfuric acid content in industrial sulfuric acid Mercury in sulfuric acid calcium sulfite GB/T-534-2014 Arsenic in sulfuric acid Industrial desulfurizer Industrial grade calcium sulfate Sulfuric acid engineering design gbt534-1989 |
《GB/T 534-2024工业硫酸》由TC63（全国化学标准化技术委员会）归口，TC63SC7（全国化学标准化技术委员会硫和硫酸分会）执行，主管部门为中国石油和化学工业联合会。
Introduction
Core changes in the standard revision
| Revised items | GB/T534-2024 | GB/T534-2014 |
|---|---|---|
| Heavy metal detection | New indicators of Cd, Cr, Tl (concentrated sulfuric acid ≤0.001%-0.2%, oleum ≤0.001%-0.2%) | Not included |
| Detection method | New ICP-OES method (Chapter 6.9), atomic fluorescence method for Hg (6.8.2) | Cold atomic absorption method for Hg |
| Safety requirements | Delete the independent safety chapter and integrate it into the warning clause | Separate Chapter 8 |
Product classification technical indicators
The standard divides industrial sulfuric acid into two categories: concentrated sulfuric acid (H2SO4≥92.5%) and oleum (free SO3≥20%). The key indicators are compared:
- Iron content of superior products: concentrated sulfuric acid (≤0.005%) is stricter than oleum (≤0.005%)
- Mercury limit: unified requirements for both types of products (≤0.0005%-0.05%)
- Newly added elements: Thallium has the strictest limit (≤0.00025%-0.001%)
Innovation in detection methods
Inductively coupled plasma optical emission spectrometry (Chapter 6.9)
Simultaneous determination of Fe, Pb, Cd, Cr and Tl by ICP-OES, characteristic wavelength selection:
- Fe: 238.204nm
- Pb: 220.353nm
- Cd: 228.802nm
- Cr: 267.716nm
- Tl: 190.801nm
Notes: Glassware must be pretreated with (1+1)HNO3 for more than 12 hours. The linear range of the standard curve is 0.2-10μg/mL.
Implementation Suggestions
Production Enterprise Response Strategies
- Raw Material Control: Strengthen Cd, Cr, Tl screening of raw materials such as pyrite
- Detection Upgrade: Configure ICP-OES equipment and establish a multi-element simultaneous detection process
- Process Optimization: Quarterly monitoring of As, Hg, and Pb should be added for smelting flue gas raw materials
Laboratory Operation Points
- When measuring Hg by atomic fluorescence method, potassium dichromate-nitric acid protective solution should be used
- The ash content determination needs to control the burning temperature to 800±50℃
- A special glass perspective tube is used for transparency detection (as shown in standard Figure 1)
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