NTP 10th Report on Carcinogens. Nickel and its compounds are on the Community Right-To-Know List. Reported in EPA TSCA Inventory.

OSHA PEL: TWA 0.1 mg (Ni)/m³
ACGIH TLV: TWA 0.2 mg(Ni)/m³; Human Carcinogen
NIOSH REL: (Inorganic Nickel) TWA 0.015 mg(Ni)/m³
DOT Classification:  5.1; Label: Oxidizer

The Nickel(II) Nitrate (1:2), with the CAS registry number 13138-45-9, is also known as Nickel(2+)ato(2-) dinitratato(2-). It belongs to the product category of Inorganics. Its EINECS registry number is 236-068-5. This chemical's molecular formula is NO₃1/2Ni and molecular weight is 91.35. What's more, both its IUPAC name and systematic name are the same which is called Nickel(2+) dinitrate. Like other nitrates, nickel nitrate is oxidizing, so that caution should be exercised when it contacts with reducing materials such as organic substances. It is used in nickel plating and to make nickel catalysts for use in chemical manufacture.

Physical properties about Nickel(II) Nitrate (1:2) are: (1)ACD/LogP: -0.129; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -0.13; (4)ACD/LogD (pH 7.4): -0.13; (5)ACD/BCF (pH 5.5): 1.00; (6)ACD/BCF (pH 7.4): 1.00; (7)#H bond acceptors: 4; (8)#H bond donors: 1; (9)#Freely Rotating Bonds: 0; (10)Polar Surface Area: 66.05 Å²; (11)Enthalpy of Vaporization: 37.72 kJ/mol; (12)Boiling Point: 83 °C at 760 mmHg; (13)Vapour Pressure: 49.8 mmHg at 25 °C.

When you are dealing with this chemical, you should be very careful. This chemical may cause damage to health at low levels. It may cause cancer. Therefore, you should avoid exposuring and obtain special instructions before using it. In case of accident or if you feel unwell seek medical advice immediately.

You can still convert the following datas into molecular structure:
(1) SMILES: [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O
(2) InChI: InChI=1S/2NO3.Ni/c2*2-1(3)4;/q2*-1;+2
(3) InChIKey: KBJMLQFLOWQJNF-UHFFFAOYSA-N

The toxicity data is as follows: