7778-43-0 Usage
Description
Sodium arsenate, also known as arsenic acid disodium salt, is an inorganic sodium salt composed of sodium cations and arsenate dianions in a 2:1 ratio. It is a pentavalent form of inorganic arsenic and exists as colorless, clear crystals with a mild alkaline taste. Sodium arsenate is not combustible and emits irritating or toxic fumes or gases when exposed to fire. It is soluble in water, slightly soluble in alcohol and glycerol, and insoluble in ether.
Uses
Used in Dyeing and Printing Industry:
Sodium arsenate is used as a mordant in dyeing and printing processes. It helps to fix dyes onto fabrics, ensuring colorfastness and improving the overall quality of the dyed material.
Used in Pest Control:
Sodium arsenate is used as a germicide and is currently registered for use as ant bait. These baits are used in approximately 1% of US homes to control and eliminate ant infestations.
Used in Other Applications:
Sodium arsenate also has other applications, such as in the production of other arsenates, due to its chemical properties and reactivity.
Hazard
Toxic by ingestion and inhalation.
Health Hazard
Exposures to arsenic acid disodium salt cause adverse health effects. The symptoms of
poisoning include, but are not limited to, cough, headache, sore throat, weakness, respiratory distress, labored breathing, irritation to the eyes, and skin, dermatitis, mucous
membranes, the respiratory tract, and pigmentation disorders. Repeated or prolonged
contact with arsenic acid disodium salt causes cardiovascular disorders affects the nervous system, neuropathy, and kidneys, resulting in severe gastroenteritis, loss of fl uids
and electrolytes, kidney impairment, collapse, shock, and death.
Health Hazard
Inorganic arsenical compounds have been classifi ed as Class A oncogenes, demonstrating
positive oncogenic effects based on suffi cient human epidemiological evidence.
Inorganic arsenicals are known to be acutely toxic. The symptoms that follow oral exposure
include severe gastrointestinal damage resulting in vomiting and diarrhea, and
general vascular collapse leading to shock, coma, and death. Muscular cramps, facial
edema, and cardiovascular reactions are also known to occur following oral exposure
to arsenic.
On ingestion, organic arsenic compounds cause severe health effects, including burning
lips, throat constriction, abdominal pain, dysphagia, nausea, vomiting, diarrhea, convulsions,
coma, and death. Irritation of the respiratory tract, skin, and eyes may result from
inhalation exposures. Chronic exposure to organic arsenic compounds may result in dermatitis,
anemia, leukocytopenia, or the effects associated with several forms of cancer.
Contact allergens
Arsenic salts are sensitizers, but most often irritants.
They are used in copper or gold extraction, glass,
feeds, weedkillers, insecticides, and ceramics. A recent
case was reported in a crystal factory worker with positive
patch tests to sodium arsenate.
Safety Profile
Confirmed human
carcinogen. Poison by intraperitoneal route.
Human mutation data reported. When
heated to decomposition it emits toxic
fumes of arsenic. See ARSENIC
COMPOUNDS.
Potential Exposure
Sodium arsenate is used in
dyeing and printing; making other arsenates; as a germicide;
in dyeing with turkey-red oil.
storage
It is important to keep stored organic arsenic compounds in a cool, dry, well-ventilated
area in tightly sealed containers and with proper labels and identifi cation. The storage
containers of organic arsenic compounds should be protected from physical damage and
stored separately from oxidizers such as perchlorates, peroxides, permanganates, chlorates,
or nitrates, and strong acids such as hydrochloric, sulfuric, or nitric acid. Further,
specifi c organic arsenic compounds must have separate storage requirements, which
should be evaluated prior to storage.
Precautions
During handling and use of arsenic compounds, workers should use appropriate personal
protective clothing and equipment. Users/workers must be careful during use, and maintain
effective measures to prevent skin contact with organic arsenic compounds. The selection
of the appropriate personal protective equipment (PPE), such as gloves, sleeves, and
encapsulating suits should be based on the extent of the worker’s potential exposure to
organic arsenic compounds. The users and the management should periodically evaluate
and determine the effectiveness of the chemical-resistant clothing in preventing dermal
contact and ensuring users’ safety.
Check Digit Verification of cas no
The CAS Registry Mumber 7778-43-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,7 and 8 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 7778-43:
(6*7)+(5*7)+(4*7)+(3*8)+(2*4)+(1*3)=140
140 % 10 = 0
So 7778-43-0 is a valid CAS Registry Number.
InChI:InChI=1/AsH3O4.2Na/c2-1(3,4)5;;/h(H3,2,3,4,5);;/q;2*+1/p-3
