Cobalt thiocyanate ion에 미치는 영향을 연구하였다. Cobalt ion이 $NH_{4}CNS$ 용액에 의해서 생성되는 ion의 색의 transmittance는 확산에 의하여 적어지며, 황산존재하에서는 황산의 양과 Transmittance 사이에 비례적 관계가 있다. 염산 및 질산도 역시 Transmittance의 값에 영향을 미치기는 하나 염산의 경과에는 이 착 ion이 황산존재하보다 다소 불안정하며 질산에 의해서는 안정화가 극히 적어서 단시간내에 Perthiocyanuric acid로 인정되는 물질로 분해한다. 또한 그 Transmittance가 과량의 광산존재하에서 적어지는 현상으로 부터 $Co(SCN)^{2-n/_{$ n/의 n의 값이 커지는 것은 ether에 이행하는 SCN-을 Volhard 씨법으로 정량함으로서 확증하였다.

The destruction rate of microorganisms by heat follows the first order reaction. In this experiments, the calculated sterilization velocity constants of Escherichia Coli are 1.97 * $10^{-2}min^{-1}.(45{\deg}$ C), 9.53 * $10^{-2}min^{-1}.(55{\deg}$ C) and $1.858min^{-1}.(70{\deg}$ C), 2.89 * $10^{-2}min^{-1}.(80{\deg}$ C), 1.32 * $10^{-1}min^{-1}.(90{\deg}$ C), 2.87 * $10^{-1}min^{-1}.(95{\deg}$ C), 7.91 * $10^{-1}min^{-1}.(100{\deg}$ C) and $1.777min^{-1}.(105{\deg}$ C). In the results, the activation energy of E. Coli is 62.0 Cal $mole^{-1}.(45{\deg}-60-{\deg})$, that of B. Subtilis are 17.8 Cal $mole^{-1}(60{\deg}-80{\deg}$ C) and 47.1 Cal $mole^{-1}(90{\deg}-105{\deg}$ C).

In this experiment, it is found that the decomposition reaction of hexamine aqueous solution by heat is the pseudo first order reaction and the calculated decomposition velocity constants of Hexamine aqueous solution are 1.17 * $10^{-5}min.^{-1}(60{\deg}$ C), 1.99 * $10^{-5}min.^{-1}(70{\deg}$ C), 2.35 * $10^{-5}min.^{-1}(80{\deg}$ C), 6.63 * $10^{-5}min.^{-1}(100{\deg}$ C). In the result, the activation energy of decomposition reaction of hexamine aqueous solution is 12 $Cal.mole^{-1}$.

Antipyretic substance is isolated from roots of Scrophularia Oldhami which is used as antipyretic and anti-inflammatory drug. This substance is identified as p-methoxycinnamic acid which rarely occurs in plants.

Alkyl-phenylthionocarbamates already have been investigated as anthelmintics. Especially ethyl-phenylthionocarbamate is noted for its anthelmintic action. Author studied methods for synthesizing Alkyl-phenylthionocarbamates, Alkyl-p-phenetyl thionocarbamates, Alkyl-cyclohexylthionocarbamates, 5 kinds for each. For alkyl radical $-CH_{3}$, $-C_{2}H_{5}$, -n-propyl, -isobuthyl, -n-buthyl, being chosen. Compounds VIII, X, XIII, XIV, and XV are new compounds. At the sametime author prepared 4 kinds of Arylthionocarbamates, among which XVII, and XIX being new compounds. (Table I) The anthelmintic action of these thionocarbamates has been examined through kymographic records indicating the action of neuromuscular preparation of Eisenia foetida Savigny in the various concentration fo above compounds: -Trendelenburg method. Santonine as the criterion of the estimation. (Table. II) 1. Compounds I-X could be prepared by method A or method B. method A in sealed tube brought on better yield and purity. 2. Compounds XI-XV couldn't be prepared by method A but by method B. 3. Arylthionocarbamates XVI, XVII, XVIII, and XIX couldn't be prepared by method A or method B but by method C. 4. Analyzed N. contained in all compounds. Analyzed C.H. and N. contained in unknown compounds, VIII, X, XIII, XIV, XV, XVII, and XIX. 5. Examination of anthelmintic action has been done under the advice of Prof. J.S.Oh medical college, Seoul Nat. University. 6. Compounds VI-X showed little action. 7. Compounds XVI-XIX showed almost no action. 8. Compounds XI-XV showed stronger action than compounds I-V, which was reported already as a usable anthelmintics. 9. Compounds XI, XII, XIII and XIV showed strongest actions, stronger than santonine as recorded on kymographion of the Trendelenburg method. Provided that, the toxity of these compounds found mild enough for human system, these compounds will serve as anthelmintics of greater powers than compounds I-V. 10. In Alkylthionocarbamates, R'NH-radical more influence on the anthelmintic action than ester radical(-OR).

Studies the reaction mechanism and optimal reaction condition of the process of preparing sodium isocyanate, by means of heating of sodium carbonate and urea. Proposing, at the sametime, the quantitative analyzing method of sodium isocyanate in the presence of impurities of $Na_{2}CO_{3}$, urea and biuret. 1. Sodium isocyanate could be prepared by means of heating reaction of sodium carbonate and urea. 2. Adding urea into the heated sodium carbonate is reasonable. 3. Quantitative analysis of sodium isocyanate in the presence of impurities, $Na_{2}CO_{3}$, urea and biuret could be done by the following method:-adding nitrobarite solution into sample solution in order to remove $CO_{3}"$ and neutralize the solution, filtering off $BaCO_{3}$, and then precipitating isocyanate as a silver salt, filtering off AgNCO, and then, titrating remaining $AgNO_{3}$ with $NH_{4}SCN$, (indicator $FeNH_{4}(SO_{4})_{2})$/TEX>

Synthesis of azosteroid 3-aza-A-homo-cholestane-4-one, 3-aza-A-homo-coprostane-4-one and 3-aza-A-homo-cholestane-4-one from corresponding oxim and keto-steroid by means of Beckmann's and Schimdt's rearrangement by perphosphoric acid have been evaluated.