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NP-40 stands for:
- Tergitol NP-40 (Dow) a nonylphenol ethoxylate with MO = 40, see Nonoxinol 40
-
Nonidet P-40 , an octylphenol ethoxylate with MO = 9, trademark of Shell Chemicals
This is a
disambiguation page for differentiating between several terms identified with the same word.