化合物详情

CAS7440-37-1

分子式Ar

分子量39.95 g/mol

危化品

Physical Description | Argon appears as a colorless odorless noncombustible gas. Heavier than air and can asphyxiate by displacement of air. Exposure of the container to prolonged heat or fire can cause it to rupture violently and rocket. If liquefied, contact of the very cold liquid with water may cause violent boiling. If the water is hot, there is the possibility that a liquid "superheat" explosion may occur. Contacts with water in a closed container may cause dangerous pressure to build.

科学粮草官-词典编辑部，修订于：2026-07-06

Toxicity

Environmental Water Concentrations

GROUNDWATER: Argon concentrations ranged from 13.1 to 17.2 micromoles/L (median 15.5 micromoles/L) in samples of groundwater from Orangeburg County, SC, collected in November 1997(1). Argon was reported at a concentration range of 0.7515 to 1.0923 mg/L in ground water samples taken at Mirror Lake, New Hampshire in 1991 and 1992(2).

Natural Pollution Sources

The atmosphere of Mars contains 1.6% of argon-40 and 5 ppm of argon-36.

Atmospheric Concentrations

The atmosphere of Mars contains 1.6% of argon-40 and 5 ppm of argon-36.

Probable Routes of Human Exposure

According to the 2006 TSCA Inventory Update Reporting data, the number of persons reasonably likely to be exposed in the industrial manufacturing, processing, and use of argon is 1 to 99; the data may be greatly underestimated(1).

Symptoms

Eye Exposure: ON CONTACT WITH LIQUID: FROSTBITE.

Adverse Effects

Other Poison - Simple Asphyxiant

Exposure Routes

The substance can be absorbed into the body by inhalation.

Human Toxicity Excerpts

/CASE REPORTS/ ... /A/ fatality from argon gas emboli during prostate cryosurgery /is reported/. The decedent underwent cryotherapy for prostate carcinoma using cryoablation probes which were cooled with argon and nitrous oxide and warmed with helium. Minutes into the procedure he experienced sudden cardiovascular collapse and could not be resuscitated. Postmortem examination was performed ... . Collection of tissues and blood samples had to be conducted carefully to capture suspected noble gases, argon, and helium. Specimens were submitted ... for toxicological examination and for evaluation of the composition of the gas retrieved from the vascular system. Gas chromatography mass spectrometric analyses confirmed argon in blood, brain, liver, and gas retrieved from the aorta. These samp...

Non-Human Toxicity Excerpts

/LABORATORY ANIMALS: Acute Exposure/ ... Carbon dioxide, argon, and nitrogen /were compared/ for inducing unconsciousness and euthanasia of Sprague-Dawley rats. We determined time to unconsciousness and monitored heart rate and mean arterial blood pressure by radiotelemetry to assess stress, recovery after exposure, and time of death. Unconsciousness (mean +/- standard error) occurred 24 +/- 3, 87 +/- 8, and 93 +/- 8 seconds after short-term exposure to carbon dioxide, argon, and nitrogen, respectively. During exposure, carbon dioxide depressed heart rate, whereas argon and nitrogen increased heart rate. Upon removal from the chamber, rats' heart rate rapidly normalized after carbon dioxide or nitrogen but remained elevated for 60 min after argon. During exposure, all agents depressed M...

Antidote and Emergency Treatment

Advanced treatment: Consider orotracheal or nasotracheal intubation for airway control in the patient who is unconscious or is in severe respiratory distress. Monitor cardiac rhythm and treat arrhythmias if necessary ... . Start IV administration of D5W /SRP: "To keep open", minimal flow rate/. Treat seizures with diazepam or lorazepam ... . /Simple asphyxiants and related compounds/