Dermatitis Venenata From the Lacquer on the Boxes of Mah Jongg Sets

Zeisler, Erwin P.

doi:10.1001/jama.1924.02650320036012

Cited by 4 publications

(1 citation statement)

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“…It must not, however, be confused with the widely used China wood oil (tung oil) produced by the Aleurites fordii and montana, species indigenous to South, Central, and West China. Perhaps the most familiar example of irritation from lacquer oil deals with numerous cases of dermatitis which accompanied the playing of mah-jongg (using imported counters) in this country in the early twenties (11,24,25).…”

Section: Source Of Irritationmentioning

confidence: 99%

Dermatitic Properties of Tung Oil

Swaney¹

1938

Ind. Eng. Chem.

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D, = molal diffusivity, gram moles/(cm.) (sec.) E = e uilibrium water, weight per unit weight of bone-dry stock absolute humidity, weight per unit weight of %nk$ii;H corresponds to the main body of the air, H, to saturation at the wet bulb temperature, H, to saturation at the surface temperature in the constant rate period, and H' to the boundary between the air film and the main body of the air J = proportionality constant R = drying coefficient, in units of the reciprocal of time MA, Mg = molecular weight of diffusing gas and nondiffusing gas, respectively N A = moles transferred per unit time P = ressure of liquid= function relating to falling-rate period h,, h,, h~, h~, = heat transfer coefficient, by conduction and convection, by radiation, for the gas phase, and for the liquid phase, respectively I%, k', k~ = transfer coefficient as Ib./sq. ft./atm., IbJsq. ft./ unit humidity difference, and lb. moles/sq. ft./atm., respectively Im = logarithmic mean 7 n = weight ratio of bone-dry air to bone-dry stock p g = partial pressure of nondiffusing gas pa, p', pi the gas Elm, at the liquid gas interface, respectively P, = saturation pressure at wet-bulb temperature q = rate of heat transfer, B. t. u./hr. re, rot, r/ = resistance to mass transfer, for the turbulent core using pressure units, for the turbulent core using humidity units, and for the laminar film, respectively T = over-all resistance r2!,rs, rW = latent heat of evaporation r,, = resistance to heat transfer in turbulent core s, s' = humid heat = partial pressure of diffusing gas, in the main body of as, at the boundary between the main body and the VOL. 30, NO. 5 t,, ta, t', t i , t" = temperature of wet bulb, of saturation, at the boundary between turbulent core and laminar film, at the liquid-gas interface, and of the surroundings, respectively w = rate of flow of bone-dry air through dryer, weight per unit time z = distance , 6 = proportionality constant y = rate of drying, grams/sq. cm. X = thermal conductivity 0 = time p = weight of bone-dry stock per unit original volume 7 , TO, T~ = total moisture content, weight per unit weight of bone-dry stock; T corresponds to e, 70 to the original time, and T~ to. the critical point, respectively p = viscosity w = mass of gas-vapor mixture transferred by convection a = h, + h,!h, Literature Cited (1) Arnold, J. H., Phusics, 4, 255, 334 (1933).(2) Chilton, T. H., and Colburn, A. P., Iivn Eao.

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Section: Source Of Irritationmentioning

confidence: 99%