Underneath flammability symbols there is a number what does it mean?

Subject: Underneath flammability symbols there is a number what does it mean?

Date: Tue Mar 14 19:55:13 2000
Posted by Callan
Grade level: 7-9 School: Hale School
City: Perth State/Province: Western Australia Country: Australia
Area of science: Chemistry
ID: 953085313.Ch

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Re: Underneath flammability symbols there is a number what does it mean?

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