The CAS registry number of Hydroxydimethylarsine oxide, sodium salt is 124-65-2. Its EINECS registry number is 204-708-2. The IUPAC name is sodium dimethylarsinate. In addition, the molecular formula is C₂H₇AsO₂.Na. What's more, it is an arsenical that has been used as a dermatologic agent and as an herbicide. And it should be stored in a cool and dry place.

Physical properties about Hydroxydimethylarsine oxide, sodium salt are: (1)ACD/LogP: -1.62; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): -1.69; (4)ACD/LogD (pH 7.4): -2.76; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 2.69; (8)ACD/KOC (pH 7.4): 1; (9)#H bond acceptors: 2; (10)#H bond donors: 1; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: 37.3 Å²; (13)Flash Point: 109.4 °C; (14)Enthalpy of Vaporization: 56.98 kJ/mol; (15)Boiling Point: 253.1 °C at 760 mmHg; (16)Vapour Pressure: 0.00288 mmHg at 25°C.

When you are using this chemical, please be cautious about it as the following:
This chemical is toxic by inhalation and if swallowed. And it is very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. During using it, you can not eat, drink or smoke. If contact it with skin, wash it immediately with plenty of ... (to be specified by the manufacturer). In addition, in case of accident or if you feel unwell, seek medical advice immediately (show label where possible). What's more, this material and/or its container must be disposed of as hazardous waste. You should avoid release to the environment and you can refer to special instructions safety data sheet.

You can still convert the following datas into molecular structure:
(1)SMILES: [Na+].[O-][As](=O)(C)C
(2)InChI: InChI=1/C2H7AsO2.Na/c1-3(2,4)5;/h1-2H3,(H,4,5);/q;+1/p-1
(3)InChIKey: IHQKEDIOMGYHEB-REWHXWOFAN

The toxicity data is as follows: