Chemical Process
The only commercial Fischer-Tropsch plant for producing liquid hydrocarbon fuel from coal is located at

SASOL (in South Africa)
Trombay (India)
Redcar (U.K.)
Los-Angles (U.S.A.)

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Chemical Process
Presence of sodium tripolyphosphate (an additive) in synthetic detergent

Facilitates its use even in hard water (by sequestering the water-hardening Ca & Mg ions)
None of these
Does not allow redeposition of dirt on the cleaned surface
Inhibits its corrosive effects

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