The Hydrazine,(4-nitrophenyl)-, hydrochloride (1:1), with the CAS registry number 636-99-7 and EINECS registry number 211-273-2, has the the systematic name of (4-nitrophenyl)hydrazinium chloride. It is a kind of pink to orange crystalline powder, and belongs to the following product categories: Amines; blocks; Aromatic Hydrazides, Hydrazines, Hydrazones and Oximes; Phenylhydrazine. And the molecular formula of the chemical is C₆H₇N₃O₂^.HCl.

The characteristics of Hydrazine,(4-nitrophenyl)-, hydrochloride (1:1) are as followings: (1)ACD/LogP: 1.45; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 1.44; (4)ACD/LogD (pH 7.4): 1.45; (5)ACD/BCF (pH 5.5): 7.34; (6)ACD/BCF (pH 7.4): 7.49; (7)ACD/KOC (pH 5.5): 144.14; (8)ACD/KOC (pH 7.4): 147.06; (9)#H bond acceptors: 5; (10)#H bond donors: 3; (11)#Freely Rotating Bonds: 3; (12)Polar Surface Area: 49.06 Å²; (13)Flash Point: 161.8 °C; (14)Enthalpy of Vaporization: 58.79 kJ/mol; (15)Boiling Point: 344 °C at 760 mmHg; (16)Vapour Pressure: 6.79E-05 mmHg at 25°C.

You should be cautious while dealing with this chemical. It irritates to eyes, respiratory system and skin. What's more, it is also Harmful by inhalation, in contact with skin and if swallowed. Therefore, you had better take the following instructions: Do not breathe dust; Avoid contact with skin and eyes; Wear suitable protective clothing, gloves and eye/face protection; In case of contacting with eyes, rinse immediately with plenty of water and seek medical advice.

Uses of Hydrazine,(4-nitrophenyl)-, hydrochloride (1:1): It can react with 3,3-dichloro-propenal to produce N-(3,3-dichloro-allylidene)-N'-(4-nitro-phenyl)-hydrazine. This reaction will need reagent AcONa^.3H₂O, and the menstruum ethanol. The reaction time is 3 hours with temperature of 20°C, and the yield is about 87%.   

Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: [Cl-].[O-][N+](=O)c1ccc(cc1)[NH2+]N
(2)InChI: InChI=1/C6H7N3O2.ClH/c7-8-5-1-3-6(4-2-5)9(10)11;/h1-4,8H,7H2;1H
(3)InChIKey: ZWWXDCOPVYATOQ-UHFFFAOYAR