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NP-40 is an ethoxylated nonylphenol for non-ionic surfactants and can act as emulsifier and demulsifier agent. NP-40 is often used to break open all membranes within a cell, including the nuclear membrane [citation needed]. To break only the cytoplasmic membrane, other detergents such as digitonin can be used.
Nonidet P-40 is a nonionic, non-denaturing detergent.Its official IUPAC name is octylphenoxypolyethoxyethanol.. Nonidet P-40 is sometimes abbreviated as NP-40, but should not be confused with a different detergent by the same name NP-40, nonylphenoxypolyethoxyethanol of the Tergitol NP series of Dow Chemicals.
To make NPEs, manufacturers treat NP with ethylene oxide under basic conditions. [12] Since its discovery in 1940, nonylphenol production has increased exponentially, and between 100 and 500 million pounds of nonylphenol are produced globally every year, [ 12 ] [ 16 ] meeting the definition of High Production Volume Chemicals .
IGEPAL CA-630 has HLB of 13.4, similar to that of Triton X-100 (13.4) and thus belongs to the detergent range (HLB 13-15); this is significantly less than 17.8 of tergitol NP-40 or 16.7 of Polysorbate 20 (also known as Tween 20), which both belong in the solubilizer range (15-18) of HLB. [2] Ca-630 is completely miscible with water.
XLT Agar (Xylose Lysine Tergitol-4) is a selective culture medium for the isolation and identification of salmonellae from food and environmental samples. It is similar to XLD agar; however, the agar is supplemented with the surfactant, Tergitol 4, which causes inhibition of Proteus spp. and other non-Salmonellae. [1]
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Put together a dominant season that counts 19.5 tackles for loss, including 10 sacks, while terrorizing opposing offensive linemen. Xs and Os: The Ducks departed the Pac-12 for the Big Ten, where ...
Howling winds, cold temperatures and even the chance of heavy snow could be in store for many Americans across the country as they gather for their Thanksgiving feasts next week. Forecasters said ...