Search results
Results From The WOW.Com Content Network
DEET is often sold and used in spray or lotion in concentrations up to 100%. [10] Consumer Reports found a correlation between DEET concentration and hours of protection against insect bites. 100% DEET was found to offer up to 12 hours of protection while several lower concentration DEET formulations (20–34%) offered 3–6 hours of protection.
This Wikipedia page provides a comprehensive list of boiling and freezing points for various solvents.
It is as effective as DEET against Aedes and Culex mosquitoes, but may be less effective than DEET against Anopheles mosquitoes, vectors of malaria. [ 7 ] [ 8 ] A 2013 review concluded that IR3535 is as effective as 20% DEET against Anopheles , citing that some studies reported possibly shorter protection of just 3.8 hours.
The active ingredient in Aerogard is N, N-diethyl-meta-toluamide (DEET). [2] Recent low-odour formulas use Picaridin (See Icaridin) History.
Note that the especially high molar values, as for paraffin, gasoline, water and ammonia, result from calculating specific heats in terms of moles of molecules. If specific heat is expressed per mole of atoms for these substances, none of the constant-volume values exceed, to any large extent, the theoretical Dulong–Petit limit of 25 J⋅mol ...
The molar mass of atoms of an element is given by the relative atomic mass of the element multiplied by the molar mass constant, M u ≈ 1.000 000 × 10 −3 kg/mol ≈ 1 g/mol. For normal samples from Earth with typical isotope composition, the atomic weight can be approximated by the standard atomic weight [ 2 ] or the conventional atomic weight.
Molar mass: 136.15 g/mol Density: 1.05 g/cm 3, solid Melting point: 111 to 113 °C (232 to 235 °F; 384 to 386 K) Boiling point: 263 °C (505 °F; 536 K) Acidity (pK a) 4.27 (in water) [2] Hazards Safety data sheet (SDS) External MSDS: Related compounds
Atomic number Element Molar mass Formal standard atomic weight s.a.w., formal short Note Z calculated; g·mol −1 A r, standard [2] A r, abridged and conventional [2]; C 9 H 8 O 4: 180.159 g·mol −1