Understanding the Chemical Properties of Tetrachlorophthalic Anhydride
Tetrachlorophthalic anhydride (Tetrachlorophthalic anhydride for short) is a white crystalline powder commonly used in the synthesis of dyes and resins. It is highly hygroscopic and slowly hydrolyzes upon contact with water, therefore special care must be taken to prevent moisture damage during transportation. This type of substance is generally classified as a corrosive chemical and is irritating to metals and skin.
Key Elements of Transport Packaging
Packaging Category: Based on its corrosiveness and toxicity, tetrachlorophthalic anhydride typically uses Class III packaging.
Container Selection: Double-layered polyethylene bags with fiberboard drums are recommended, or galvanized iron drums lined with plastic bags.
Sealing Requirements: All packaging must be airtight to prevent the entry of humid air.
UN Code and Transport Marking
The UN code for this substance is UN3261, belonging to Class 8 corrosive substances. Transport vehicles must display a corrosive substance label (white background with black lettering, upper half black, lower half white), and it must be kept separate from food, oxidizers, etc. During summer transportation, it is recommended to control the temperature inside the vehicle below 30°C and avoid prolonged exposure to direct sunlight.
