The Oxalyl dihydrazide, with the CAS registry number 996-98-5 and EINECS registry number 213-640-2, has the systematic name and IUPAC name of ethanedihydrazide. It is a kind of white to slightly yellow crystals or powder, and belongs to the following product categories: Aromatic Hydrazides, Hydrazines, Hydrazones and Oximes. And the molecular formula of this chemical is C₂H₆N₄O₂.

The physical properties of Oxalyl dihydrazide are as followings: (1)ACD/LogP: -2.32; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): -2.32; (4)ACD/LogD (pH 7.4): -2.32; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 1.3; (8)ACD/KOC (pH 7.4): 1.3; (9)#H bond acceptors: 6; (10)#H bond donors: 6; (11)#Freely Rotating Bonds: 3; (12)Polar Surface Area: 47.1 Å²; (13)Index of Refraction: 1.547; (14)Molar Refractivity: 25.63 cm³; (15)Molar Volume: 80.7 cm³; (16)Polarizability: 10.16×10^-24cm³; (17)Surface Tension: 72.6 dyne/cm; (18)Density: 1.461 g/cm³.

Uses of Oxalyl dihydrazide: It can react with carbon disulfide to produce bis-(1,3,4-oxadiazol-2-yl)-5-thiol. This reaction will need reagent aq. KOH, and the solvent methano. The reaction time is 6 hour with heating, and the yield is about 58.7%.

You should be cautious while dealing with this chemical. It irritates to eyes, respiratory system and skin. Therefore, you had better take the following instructions: Wear suitable protective clothing, and in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice; Do not breathe dust and then try to avoid contacting with skin and eyes.

You can still convert the following datas into molecular structure:
(1)SMILES: O=C(NN)C(=O)NN
(2)InChI: InChI=1/C2H6N4O2/c3-5-1(7)2(8)6-4/h3-4H2,(H,5,7)(H,6,8)
(3)InChIKey: SWRGUMCEJHQWEE-UHFFFAOYAQ

The toxicity data is as follows: