Related Clues:
- Candle or soap substance
- Fat processed for making candles
- Chemical in drain cleaners
- Caustic drain unclogger
- Caustic stuff in Drano
- Caustic chemical used in making soap
- Chemical in biodiesel factories
- Caustic 'Fight Club' substance
- Oil partner in soapmaking
- Drain-opener ingredient
- Soapmaker's caustic need
- Drain cleaner chemical
- Caustic fluid
- Soap ingredient, once
- More common name for caustic soda