Liquefied Sulfur Dioxide (SO₂)

Sulfur Dioxide (SO₂) Gas | Industrial & Electronic Grade Supplier

Supplier: Wenzhou Yingyue New Materials Co., Ltd.

Product Overview

Sulfur Dioxide (SO₂) is a colorless, non-flammable industrial toxic gas with stable chemical properties and wide industrial applicability. As a professional Chinese SO2 gas manufacturer and exporter, Yingyue New Materials supplies high-purity industrial grade (99.9%) and electronic grade (99.999%) sulfur dioxide gas. Adhering to strict GB/T 3637-2011 national standards, we implement full-process quality testing to ensure stable impurity indicators and consistent batch quality. We support flexible cylinder packaging and large-scale bulk tanker delivery, with standard and customized valve configurations to meet differentiated usage needs of global customers.

Key Product Specifications

Product Purity & Grade

We offer two mainstream grades of sulfur dioxide gas to cover low-end to high-end industrial scenarios:

1. Industrial Grade: 99.9% Purity

Complies with national standard GB/T 3637-2011, with strict control of moisture, ignition residue and arsenic impurities. It is the mainstream grade for conventional chemical production, food preservation and industrial processing.

2. Electronic Grade: 99.999% Purity (Customizable)

Ultra-high purity grade with ultra-low impurity content, specially optimized for semiconductor, electronic manufacturing and high-precision chemical synthesis scenarios, supporting customized batch production.

Packaging, Valve & Delivery Solution

To solve the packaging pain points of different procurement volumes for customers, we provide diversified packaging and logistics solutions:

1. Cylinder Packaging

Conventional specifications: 40L, 50L, 800L steel cylinders. Equipped with standard QF-10 valves by default; CGA660 valves and other customized valve types are available according to customer requirements.

2. Bulk Tanker Delivery

Support 30-ton large-scale tanker transportation, suitable for factory customers with supporting storage tanks, effectively reducing unit gas cost and realizing continuous supply.

3. Logistics & Supply Capacity

Stable monthly supply capacity of 30,000 tons; goods can be shipped from Shanghai, Qingdao and other major Chinese ports, supporting global export transportation.

Main Applications

Sulfur dioxide is an essential basic chemical raw material, widely used in multiple industries:

1. Sulfuric Acid Manufacturing

As the core intermediate in the contact process of sulfuric acid production, it is converted into sulfur trioxide and oleum, which is the key raw material for industrial sulfuric acid synthesis.

2. Food Preservation & Processing

Known as food additive E220, it has excellent antibacterial and anti-oxidation effects. It is widely used in the preservation of dried fruits, wine brewing and molasses processing to maintain product color and prevent mildew and deterioration.

3. Chemical Synthesis & Reduction

Used as a high-efficiency reducing agent and reaction precursor in fine chemical, pharmaceutical and pesticide production.

4. Industrial Refrigeration

With easy liquefaction and high evaporation heat, it can be used as an industrial refrigerant for special refrigeration equipment.

Safety & Export Certification

Our sulfur dioxide gas is strictly produced in accordance with international export standards, with complete qualification documents: UN1079 transportation certification, complete SDS safety data sheet and batch test reports. We provide professional guidance on gas storage, transportation and operation to ensure safe use and customs clearance for overseas customers.

Why Choose Yingyue New Materials?

✅ Diversified Customization: Support grade, purity, valve type and packaging customization to match different application scenarios

✅ Stable Mass Supply: 30,000 tons monthly output, supporting long-term stable orders and large-scale bulk procurement

✅ Full-Service Export: Rich export experience, complete documents, supporting global one-stop logistics delivery

✅ Strict Quality Control: Each batch of products is tested for impurities to ensure stable and reliable quality