Class 2 dangerous gas
The two types of dangerous goods in international shipping include compressed gas and liquefied gas, which are further divided into:

Class 2.1 - Flammable gases
Acetylene: colorless odorless gas. The gas is well mixed with air, and it is easy to form an explosive mixture. Explosion limit: 2.5% ~ 100% (volume) in the air

Class 2.2 - Non-flammable, non-toxic gases
1. Asphyxiating gases: such as carbon dioxide, nitrogen, etc.
2. Oxidizing gases: such as liquefied oxygen.
3. Gases not included in other categories: aerosols or aerosol sprayers. The classification of hazardous properties of the substance is determined by the properties of the gas and its inclusions in the sprayer.

Class 2.3 - Toxic gases
Such as: cyanide: colorless gas or compressed liquefied gas, has a special smell. When burned, toxic gases containing hydrogen cyanide, carbon monoxide and nitrogen oxides are produced. React with strong oxidants, risk of fire and explosion. Reacts with acid to form the highly toxic gas hydrogen cyanide.

Explosion limit: 6.6% ~ 42.6% (volume) in the air; LC50:350ppm, 1 hour (inhaled by rats).

What is a pressure vessel?

Class 2 dangerous goods generally need to be loaded in a closed pressure vessel during transportation, and the pressure vessel includes cylinders, tubes, pressure drums, closed refrigerated containers and cylinder groups, also known as pressure vessels.

The pressure vessels used in the IMDG CODE are mainly used for the transport of Class 2 gas substances, and the specific requirements are as follows:
• Test pressures for cylinders, tubular vessels, pressure drums and cylinder sets shall comply with P200 packaging guidelines
• For pressurized chemicals, compliance with packaging Guideline P206 is required. The test pressure of closed cryogenic containers shall comply with P203 packaging guidelines.
• The test pressure of the metal hydrogen storage system shall comply with the requirements of packaging guideline P205.
• Cylinders for the shipment of adsorbed gases shall be subject to the test pressure specified in packaging Guideline P208.

Pressure steel drum

cylinder

cylinder

cylinder

When Class 2 dangerous goods are subjected to heat, impact or strong vibration, the pressure in the container will increase sharply, resulting in the rupture and explosion of the container, or the loosening of the gas cylinder valve, resulting in fire or poisoning accidents. Therefore, the safe and compliant shipment of Class 2 dangerous goods is crucial for export enterprises.

What information is required for shipping Category 2 dangerous goods?

Booking stage:
Power of attorney, MSDS, dangerous bag certificate/Limited quantity certificate/pot verification

Application stage:
MSDS, dangerous bag certificate/Limited quantity certificate/pot inspection certificate, declaration letter, packaging technical instructions

Customs declaration stage:
According to whether the pressure vessel (cylinder) is shipped as a commodity or as a package, the customs declaration is subdivided into: temporary import and export declaration and general trade declaration.

Common customs declaration methods: bottle gas declaration by one vote, bottle gas declaration by one vote, bottle gas declaration by two votes, according to different types of information required to prepare slightly different (details can consult Shun Xin logistics customer service staff).

The dangerous bag certificate mentioned in the information is also the "Identification Result of the Use of Outbound Dangerous Goods Transport Packaging" is relatively common, and the Limited Quantity certificate is the certification material when the 2 types of goods shipped meet the 7a requirements of the IMDG List of dangerous goods limited quantity. The pot certification (also known as the cylinder certificate) is the special equipment inspection agency responsible for inspection and certification, as shown in the following figure:

How to handle pot inspection and commodity inspection has always been the pain point and difficulty of the export enterprises of 2 types of dangerous goods. As a professional international dangerous goods Logistics service provider, Sungreen Logistics can comply with the boiler inspection and commodity inspection of category 2 dangerous goods such as refrigerants, special gases, electronic special gases and fire extinguishers.

What information does the compliance agent need to provide for the certification of Class 2 gas dangerous goods POTS?

So what information and information do compliance agents need to provide for the verification of Class 2 gas dangerous goods POTS?
1. Product Chinese MSDS electronic version;
2. Electronic version of cargo transportation condition appraisal report or hazardous characteristics classification appraisal report;
3. The appearance photos of the cylinder, confirm whether the cylinder body has the seal of the bottle number and the date of the bottle inspection;
4. Empty bottle certification, provide bottle number and bottle inspection date form stamped original;
5. Full bottle certification, in addition to the bottle number and bottle inspection date form stamped original, also need to provide the filling unit's filling qualification, filling report and filling record electronic version.

Bottle number steel stamp legend

Bottle number steel stamp legend

What information does the compliance agent need to provide for the commodity inspection of Class 2 gas dangerous goods?

What materials and information do compliance agents need to provide for the commodity inspection of Class 2 gas dangerous goods?
1. Product Chinese MSDS electronic version;
2. Classification and identification report of product hazard characteristics (original)
3. Pot verification (original)
4. Application Form (template filled and stamped)
5. Other information: customs declaration, declaration of conformity of export hazardous chemicals manufacturers, no inhibitor declaration, factory inspection, GHS Chinese label (if necessary)

For the detailed information, process, cost, timescales, etc. of the verification and commodity inspection of Class 2 gas dangerous goods POTS, please consult Sungreen Logistics sales and customer service staff for professional and efficient solutions!

Adhering to the business philosophy of "Professional dangerous goods Logistics, connecting the world with chemicals", Shanghai Sungreen Logistics Group has been deeply engaged in the international logistics industry of Class 2 dangerous goods gases. Committed to providing customers with dangerous goods sea LCL, sea FCL, air freight, import, TANK tank, gate trailer, storage interior, dangerous goods declaration, maritime safety bureau and port authority record, overseas customs clearance delivery, dangerous goods logistics consulting and training and other one-stop logistics services. We tailor the most reasonable, the most professional, the most humane international logistics solutions for customers.