What safety precautions must be observed when using pyridinium tribromide?

In handling a pyridinium tribromide it should be avoid formation of dust and aerosols, then the handler should provide correct exhaust ventilation at the places or areas where dust is formed and it is a normal measures for preventive fire protection. And in storage it must be keep in a tightly closed container in a dry area.

Answer and Explanation:

Pyridinium tribromide is corrosive and a lachrymator in nature so a person who uses the chemical must needs to use the fume hood at all times when using this substance. He must avoid all contact with skin and fumes with eyes and mouth by wearing goggles and gloves.

sand 60

clay 10

silt 30

sandy loam should be dominated by the sand. as the amount of sand increased, the amount of slit needed to anchor the plants' roots to the sand will also be increased. even though the amount is very little, 10% part of clay is still necessary for proper oxidation.

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.