diarsenic trioxide
diarsenic trioxide - Names and Identifiers
| Name | Arsenic(III) oxide |
| Synonyms | arsenous acid Arsenic blanc Arsenic oxide Arsenous oxide acidearsenieux Acide arsenieux dioxodiarsoxane Arsenic trioxide oxygen(-2) anion Arsenic oxide (3) arsenic(+3) cation Arsenic(III) oxide anhydridearsenieux diarsenic trioxide Anhydride arsenieux acidearsenieux(french) bicyclo[1.1.1]diarsoxane anhydridearsenieux(french) tricyclo[3.3.1.1~3,7~]tetraarsoxane |
| CAS | 1327-53-3 |
| EINECS | 215-481-4 |
| InChI | InChI=1/As2O3/c3-1-4-2(3)5-1 |
diarsenic trioxide - Physico-chemical Properties
| Molecular Formula | As2O3 |
| Molar Mass | 197.84 |
| Density | 3,738 g/cm3 |
| Melting Point | 312.3 °C |
| Boling Point | 465°C |
| Flash Point | 465°C subl. |
| Water Solubility | 37 g/L (20 ºC) |
| Solubility | 37 g/L (20°C) |
| Vapor Presure | 0.033Pa at 25℃ |
| Appearance | Powder |
| Specific Gravity | 3.738 |
| Color | White |
| Merck | 14,804 |
| Storage Condition | Poison room |
| Physical and Chemical Properties | The trait was odorless. White powder or crystal. melting point 312.3 ℃ relative density 4.15 solubility slightly soluble in water to form arsenous acid. Monoclinic and cubic crystals are soluble in ethanol, acids and alkalis; Amorphous is soluble in acids and alkalis, but insoluble in ethanol. |
| Use | For the glass industry and the preparation of drugs, but also used as pesticides, herbicides, etc., as a general reference reagent and preservatives, but also for the manufacture of arsenite |
diarsenic trioxide - Upstream Downstream Industry
| Raw Materials | Coke(coal) |
| Downstream Products | diarsenic pentaoxide Arsenic |
diarsenic trioxide - Nature
Open Data Verified Data
White or transparent glass, amorphous block or crystalline powder. Is an amphoteric oxide. Melting point 275 °c, boiling point 465 °c. Dissolved in dilute hydrochloric acid, sodium hydroxide and sodium carbonate solution. Slightly soluble in cold water, soluble in 15 boiling water, insoluble in chloroform, ethanol and ether. The sublimation temperature was about 218 °c. In case of high heat, sublimation produces highly toxic gas.
Last Update：2025-06-10 22:55:16
diarsenic trioxide - Preparation Method
Open Data Verified Data
- Direct method (oxidation roasting method): After the realgar ore is crushed to a particle size of less than 3mm, it is sent to a baking furnace and air is introduced to conduct oxidation roasting at about 550 ℃, the generated furnace gas containing dust is subjected to dust removal, condensation, gravity sedimentation, cooling crystallization at 220~250 ℃, and then electric dust removal, and the obtained solid arsenic trioxide is classified and air-separated, the arsenic trioxide product was obtained.
- by-product recovery method: industrially, arsenic trioxide is produced by dedusting, cooling, and trapping the generated gas by crushing and oxidizing roasting of arsenic-recoverable ore.
Last Update：2022-01-01 11:05:43
diarsenic trioxide - Application
Open Data Verified Data
used as a general reference reagent and in the manufacture of preservatives, insecticides, herbicides and arsenites.
Last Update：2025-08-19 16:24:40
diarsenic trioxide - Safety
Open Data Verified Data
high toxicity class. Rat oral LDso: 15.1 mg/kg mouse oral LDso: 39.4 mg/kg. Rabbits by eye 50ug (24h). There is severe stimulation. Rabbit percutaneous 5mg (24h), there are severe stimulation. The lethal dose to humans is about 0.06g. It mainly affects the nervous system and capillary permeability, and has a stimulating effect on the skin and mucous membranes. Avoid contact with oxidants, acids, halogens. Store in a cool, ventilated warehouse. Keep away from fire and heat source. The packaging is sealed. It should be stored separately from oxidants, acids, halogens and edible chemicals.
Last Update：2025-06-10 22:55:16
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diarsenic trioxide
Benzoic acid, 2-ethoxy-
RU(OAC)2[(R)-SEGPHOS]
四氟硼酸四丁基鏻
Kyselina terftalova
2-氯-5-羟基甲苯
柠檬酸钠二水合物
鲁拉西酮杂质11
1,4二環氧己烷
顺式二氯菊酸
Benzoic acid, 2-ethoxy-
RU(OAC)2[(R)-SEGPHOS]
四氟硼酸四丁基鏻
Kyselina terftalova
2-氯-5-羟基甲苯
柠檬酸钠二水合物
鲁拉西酮杂质11
1,4二環氧己烷
顺式二氯菊酸
Raw Materials for diarsenic trioxide
Downstream Products for diarsenic trioxide