1303-28-2
1303-28-2 - Names and Identifiers
| Name | diarsenic pentaoxide |
| Synonyms | diarsenic acid Arsenic(V) oxide Arsenic pentoxide Arsenicpentaoxide anhydridearsenique arsenicoxide(as2o5) diarsenic pentaoxide Arsenicacidanhydride arsenicacid,anhydride anhydridearsenique(french) 1,3-dioxodiarsoxane 1,3-dioxide |
| CAS | 1303-28-2 |
| EINECS | 215-116-9 |
| InChI | InChI=1/As4O10/c5-1-9-2(6)12-3(7,10-1)14-4(8,11-1)13-2 |
1303-28-2 - Physico-chemical Properties
| Molecular Formula | As2O5 |
| Molar Mass | 229.84 |
| Density | 4,32 g/cm3 |
| Melting Point | 315 °C |
| Water Solubility | Soluble in water and alcohol. |
| Appearance | Powder |
| Specific Gravity | 4.32 |
| Color | White |
| Merck | 14,798 |
| Storage Condition | Poison room |
| Sensitive | Hygroscopic |
| Physical and Chemical Properties | Melting Point: 315 |
| Use | For the preparation of arsenate, dye and printing industry, etc., and can be used as pesticides |
1303-28-2 - Upstream Downstream Industry
| Raw Materials | Arsenic(III) oxide |
1303-28-2 - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| solubility in water (g/100ml) | dissolved grams per 100ml of water: 65.8g/20 ℃ |
| Use | Used in arsenate preparation, dye and printing industry, etc., and can be used as insecticide |
| production method | put 100g of arsenic trioxide into a round bottom flask, add 100mL of concentrated nitric acid, and then heat. When brown nitrogen oxide gas is no longer produced, the solution is transferred to another flask by decantation, 50mL of concentrated nitric acid is added and heated, and evaporated below 300 ℃ to dry. The evaporation residue is soaked and dissolved with as little water as possible. After filtering with a glass filter, it is gradually dehydrated by heating at 250~300 ℃: if the temperature is too high, it will release oxygen and decompose to become arsenic trioxide, so attention must be paid. As the dehydration progresses, white powdery residues appear, which are completely cured and stored in a dryer containing phosphorus pentoxide or concentrated sulfuric acid. |
| category | pesticide |
| toxicity classification | highly toxic |
| acute toxicity | oral-rat LD50: 8 mg/kg; Oral-mouse LD50: 55 mg/kg |
| explosive hazard characteristics | react violently with compound RBC2 |
| flammability hazard characteristics | non-combustible substances; toxic arsenide vapor released when heated |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; Store separately from alkalis, acids and food additives |
| occupational standard | TLA-TWA 0.01 mg (arsenic)/m3 |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 21:11:58
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Raw Materials for 1303-28-2