Quantitative Study of the Preparations of Guanidine Nitrate and Nitroguanidine

Abstract

for the large-scale separations and the mechanical analyses; and to L. F. Rader, Jr., of the Fertilizer Technology Division, for assistance in the chemical analyses. The samples of phosphate rock were kindly furnished by several of the phosphate mining companies.

Melamine-Formaldehyde Film-Forming Compositions

“…This mechanism was described by Drechsel (20,21), Cloez and Cannizzaro (16), Lemoult (67), Davis (17), Franklin (28), Chastellain (18), and Stollé and Krauch (78). This tendency to form six-membered heterocyclic rings was treated to some extent by Smith, Sabetta, and Steinbach (74), and may be postulated somewhat as in Figure 1. Numerous other mechanisms have been suggested.…”

Guanidines from ‘toxic substances’ to compounds with multiple biological applications – Detailed outlook on synthetic procedures employed for the synthesis of guanidines

“…Microwave-assisted synthesis of highly functionalized guanidines on soluble polymer support © 2012 Elsevier Ltd. 51 Synthesis of novel functionalized guanidines and their different reactions have also been extensively carried out by many research groups, employing different approaches. Including the synthesis of dicarbethoxyguanidine, [103] nitroguanidine, [104] nitrotriarylguanidines, [105] N 1 -(6 -Methoxy-8-quinolylaminoalkyl-)guanidines, [106] 1-(Alky1amino)-guanidines, [107] N-alkyl-N'-carboalkoxy guanidines, [108] guanidino diesters, [109] N-guanidino-modified arginines, [110] radioabeled guanidines, [111] pyranosyl nucleosides with guanidine functionality, [112] phosphinyl guanidines, [113] guanidinium chlorides, [114] phase transfer catalyzed alkylation of guanidines, [115] N-triflyl guanidines, [116] cyclic guanidines, [117], [70] monocyclic guanidines, [118] bicyclic guanidines, [25], [119] tricyclic guanidines, [120] tetracyclic guanidines, [121] macrocyclic guanidines, [122] and polycyclic guanidines. [123] …”

Estimation of Guanidine with Calcium Picrate

“…In this establishment the method of Smith et al (4) was originally used for the estimation of guanidine. The reagent consisted of an aqueous saturated solution of ammonium picrate saturated with guanidine picrate (250 ml.…”