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Chemical symbolHeCylinder colourBrownFlammable/non-flammableNon-flammableLighter/heavier than airMuch lighterColourColourlessOdourOdourlessTasteTastelessToxicityNon-toxicCorrosiveNon-corrosiveRecommended materialsPipeCopper/copper alloy

Steel

Plastic (within limitatio

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13y ago

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