4. Material. Flashcards Preview

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Flashcards in 4. Material. Deck (3):

1. What is nidle valve?

It permits excess air to be released from the expansion tank prior to heat-up of the system.


5. What is tallow?

animal fat, the rendered fat of cattle and sheep; white and almost tasteless when pure.
Harder than grease, composed of glycerides of fatty acids, containing a large proportion of palmitic acid and steric acid. It is used to make candles, soap and glycerol margarine.


6. What is Potassium Hydroxide?

A brittle white deliquescent solid KOH that dissolves with much heat in less than its weight of water to form a strong alkaline and caustic solution, also called Caustic Potash.