124-65-2 Usage
Description
Sodium cacodylate 97+, also known as dimethylarsinic acid sodium salt, is a white crystalline or granular solid with a slight odor. It is toxic by ingestion, inhalation, and skin absorption. Sodium cacodylate is a white crystalline solid which occurs as the trihydrate and liquefies in the water of hydration at 60°C, becoming anhydrous at 120°C.
Uses
Used in Agriculture:
Sodium cacodylate 97+ is used as a herbicide for general weed control. It has been used as a non-selective herbicide, defoliant, and rodenticide, as well as in veterinary medicine. However, its use is severely restricted in EU countries and not registered for use in the U.S.
Used in Chemical Industry:
Sodium cacodylate 97+ is used as a chemical intermediate in the synthesis of various organic compounds. It is also used in the preparation of other arsenic compounds and as a reagent in analytical chemistry.
Used in Research:
Sodium cacodylate 97+ is used in research as a fixative in the preparation of biological samples for electron microscopy. It helps to preserve the structure of the samples and improve the quality of the images obtained.
Air & Water Reactions
Soluble in water.
Reactivity Profile
Sodium cacodylate 97+ gives basic solutions in water. Corrodes common metals, but reaction is not hazardous. [USCG, 1999]. Liquefies in its own water of crystallization when heated to 60°C; becomes anhydrous at 120°C [Merck]. Burns with a bluish flame, emitting a garlic-like odor [Merck].
Hazard
Toxic by inhalation and ingestion.
Health Hazard
Moderately toxic; probable oral lethal dose in humans is 0.5-5 g/kg or between 1 ounce and 1 pint (or 1 lb.) for a 70 kg (150 lb.) person. It may cause disturbances of the blood, kidneys, and nervous system.
Fire Hazard
Poisoning potential is high when heated to decomposition, or on contact with acids or acid fumes, because Sodium cacodylate 97+ emits highly toxic fumes of arsenic. Avoid water solution in contact with active metals (iron, aluminum, zinc).
Trade name
ACME? Sodium cacodylate; ALKARSODYL?; ANSAR 160?; ARSECODILE?; ARSYCODILE?; BOLLS-EYE?; CHEMAID?; DREXEL EZY-PICKIN COTTON DEFOLIANT?; DREXEL KACK HERBICIDE?; DUTCH-TREAT?; HERB-ALL?; PHYTAR 560? (with Cacodylic acid); RAD-E-CATE?; SILVISAR?
Potential Exposure
This material has been used as a nonselective herbicide and for general weed control.
Shipping
UN1688 Sodium cacodylate Hazard Class: 6.1; Labels: 6.1-Poisonous materials. UN3465 Organoarsenic compound, solid, n.o.s., Hazard Class: 6.1; Labels: 6.1Poisonous materials, Technical Name Required
Purification Methods
Recrystallise it from aqueous EtOH. [Beilstein 4 H I 612.]
Incompatibilities
Incompatible with oxidizers, strong bases; acids, active metals (iron, aluminum, zinc). Contact with acids react to form highly toxic dimethylarsine gas. Attacks some metals.
Waste Disposal
For cacodylic acid, precipitate as calcium arsenate and calcium arsenite by treatment with excess lime water. Recycle if possible. If not, put in secure storage for possible disposal in leach-proof dumps. In accordance with 40CFR165, follow recommendations for the disposal of pesticides and pesticide containers. Must be disposed properly by following package label directions or by contacting your local or federal environmental control agency, or by contacting your regional EPA office.
Check Digit Verification of cas no
The CAS Registry Mumber 124-65-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,2 and 4 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 124-65:
(5*1)+(4*2)+(3*4)+(2*6)+(1*5)=42
42 % 10 = 2
So 124-65-2 is a valid CAS Registry Number.
InChI:InChI=1/C2H7AsO2.Na/c1-3(2,4)5;/h1-2H3,(H,4,5);/q;+1