Tashika, Yoshio published the artcileSynthesis and properties of 1,1′-dithiodiformamidine hydrohalide, Related Products of ethers-buliding-blocks, the publication is Yakugaku Zasshi (1961), 1519-22, database is CAplus and MEDLINE.
A solution of 23 g. (H2N)2CS, 200 mL. H2O, 40 mL. 95% EtOH, and 460 mL. 2N HCl, while cooling, treated dropwise with 74 mL. 50% EtOH containing 3 mol H2O2 at 5°, 900 mL. Et2O added, and the mixture kept overnight at 0° gave 30 g. 1,1′-dithiodiformamidine (I): 2HX (X = Cl), m. 181°; picrate m. 154°. Similarly were prepared I (oxidizing agent, reaction medium, X in I, m.p., and m.p. of picrate given): SO2Cl2, absolute EtOH, Cl, 180°, 154°; p-MeC6H4SO2Cl, Me2CO, Cl, 180°, 153°; H2O2, 3N HBr, Br, 195-6°, 154.5°; Br, absolute EtOH, Br, 195-6°, 165°; Br, CHCl3, addition product, 182°, 164°; iodine, H2O, iodine, 78°, 154°; iodine, C6H6, addition product, 89°, 154°; H2O2, 3N HI, iodine, 82°, 154°. I (X = Cl) was the most stable and I (X = iodine) the most labile, liberating iodine. I was soluble in H2O but not in organic solvents. Addition of organic solvent to the solution of I (X = iodine) immediately started liberation of iodine.
Yakugaku Zasshi published new progress about 14807-75-1. 14807-75-1 belongs to ethers-buliding-blocks, auxiliary class Salt,Thiourea,Amine,Aliphatic hydrocarbon chain, name is Formamidine disulfide dihydrochloride, and the molecular formula is C39H35N5O8, Related Products of ethers-buliding-blocks.
Referemce:
https://en.wikipedia.org/wiki/Ether,
Ether | (C2H5)2O – PubChem