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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.
Confusingly, biochemical protocols published between the 1960s [3] and 2000s refer to Shell's Nonidet P-40 as NP-40. Shell's original Nonidet P-40 had a hydrophilic-lipophilic balance (HLB) value of 13.5, [4] as opposed to 12.9 for the currently available IGEPAL CA-630, [5] indicating that the currently available compound is more potent than ...
It is available in densities varying from 3 to 25 pounds per cubic foot (0.048 to 0.400 g/cm 3). [3] It has a low flammability rate. [4] A universal cross-linked closed-cell PVC that was used in a comparison with three heat-resistant cross-linked had a glass temperature of 83.2 °C.
The Dow Lab Safety Academy is one component of Dow's larger laboratory safety initiative launched in early 2012, following a report from the U.S. Chemical Safety Board [147] that highlighted the potential hazards associated with conducting research at chemical laboratories in academic institutions. Seeking to share industry best practices with ...
PVC properties as a function of phthalate plasticizer level [24] Plasticizer content (% DINP by weight) Specific gravity (20 °C) Shore hardness (type A, 15 s) Flexural stiffness Tensile strength (Mpa) Elongation at break (%) Example applications Rigid: 0: 1.4: 900: 41 <15: Unplasticized PVC (UPVC): window frames and sills, doors, rigid pipe ...
The military sprayed Saran on fighter planes to guard against salty sea spray, and carmakers used it for upholstery. Dow later devised a formulation of polyvinylidene chloride free of unpleasant odour and green colour. The most well known use of polyvinylidene chloride came in 1953, when Saran Wrap, a plastic food wrap, was introduced.
Wood–plastic composites (WPCs) are composite materials made of wood fiber/wood flour and thermoplastic(s) such as polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), or polylactic acid (PLA). In addition to wood fiber and plastic, WPCs can also contain other ligno-cellulosic and/or inorganic filler materials.
One example is AirKrete, [5] at R-3.9 (RSI-0.69) per inch and no restriction on depth of application. Non-hazardous. Being fireproof, it will not smoke at all upon direct contact with flame, and is a two-hour firewall at a 3.5 in (89 mm) (or normal 2 in × 4 in (51 mm × 102 mm) stud wall) application, per ASTM E-814 testing (UL 1479).