Reported in EPA TSCA Inventory. Cyanide and its compounds, as well as copper and its compounds, are on the Community Right-To-Know List.

ACGIH TLV: TWA 1 mg(Cu)/m³
DOT Classification:  6.1; Label: Poison

The Copper(I) cyanide, with the CAS registry number 544-92-3, is also known as Cuprous cyanide. It belongs to the product categories of Inorganics; Classes of Metal Compounds; Cu (Copper) Compounds; Transition Metal Compounds. Its EINECS registry number is 208-883-6. This chemical's molecular formula is CuCN and molecular weight is 89.563. Its IUPAC name is called copper(1+) cyanide. 

Physical properties of Copper(I) cyanide: (1)ACD/LogP: -0.25; (2)ACD/LogD (pH 5.5): -0.25; (3)ACD/LogD (pH 7.4): -0.25; (4)ACD/BCF (pH 5.5): 1; (5)ACD/BCF (pH 7.4): 1; (6)ACD/KOC (pH 5.5): 17.42; (7)ACD/KOC (pH 7.4): 17.42; (8)#H bond acceptors: 1; (9)Enthalpy of Vaporization: 27.18 kJ/mol; (10)Boiling Point: 25.7 °C at 760 mmHg; (11)Vapour Pressure: 740 mmHg at 25°C.

Preparation: It can be prepared by the reduction of copper(II) sulfate with sodium bisulphite at 60 °C, followed by the addition of sodium cyanide to precipitate pure LT-CuCN as a pale yellow powder.

2 CuSO₄ + NaHSO₃ + H₂O + 2 NaCN → 2 CuCN + 3 NaHSO₄

Uses: The compound is useful as a catalyst, in electroplating copper, and as a reagent in the preparation of nitriles. Copper(I) cyanide is used for electroplating copper. The compound is useful reagent in organic synthesis, for example in the regioselective and stereoselective allylation and conjugate addition of N-Boc-2-lithiopyrrolidine and N-Boc-2-lithiopiperidine, or the copper cyanide catalyzed palladium coupling of α-lithio amines and aryl iodides.

When you are using this chemical, please be cautious about it as the following:
This chemical is very toxic and is dangerous for the environment. It is very toxic by inhalation, in contact with skin and if swallowed. In addition, it is very toxic to aquatic organisms which may cause long-term adverse effects in the aquatic environment. After contact with skin, you should wash immediately with plenty of ... (to be specified by the manufacturer). In case of accident or if you feel unwell seek medical advice immediately (show the label where possible). This material and its container must be disposed of as hazardous waste.

You can still convert the following datas into molecular structure:
(1)Canonical SMILES: [C-]#N.[Cu+]
(2)InChI: InChI=1S/CN.Cu/c1-2;/q-1;+1
(3)InChIKey: DOBRDRYODQBAMW-UHFFFAOYSA-N

The toxicity data is as follows: