Arsenous hydride
ARSINE
CAS: 7784-42-1
Molecular Formula: AsH3
Arsenous hydride - Names and Identifiers
| Name | ARSINE |
| Synonyms | ARSINE Arsenowodor Arsenic hydrid Arsenic hydride Arsenwasserstoff Arsenous hydride Arsenic trihydride Arseniuretted hydrogen |
| CAS | 7784-42-1 |
| EINECS | 232-066-3 |
Arsenous hydride - Physico-chemical Properties
| Molecular Formula | AsH3 |
| Molar Mass | 77.94542 |
| Density | 1.321 (estimate) |
| Melting Point | -117° |
| Boling Point | bp -62.5° |
| Water Solubility | mL/100g H2O (760mm): 42 (0°C), 30 (10°C), 28 (20°C) [LAN05] |
| Vapor Presure | >760 mmHg at 20 °C |
| Appearance | colorless gas |
| Odor | Garlic-like odor detectable at 0.5 to 1 ppm |
| Exposure Limit | TLV-TWA 0.2 mg/m3 (0.05 ppm) (ACGIHand OSHA); 0.002 mg(As)/m3/15 min; ceiling0.005 ppm(As)/15 min (NIOSH). |
| Stability | Stable, but pyrophoric. Capable of detonation with some initiators. Flammable. Incompatible with oxidizing agents, chlorine, nitric acid. |
Arsenous hydride - Risk and Safety
| Risk Codes | R12 - Extremely Flammable R26 - Very Toxic by inhalation R48/20 - R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S9 - Keep container in a well-ventilated place. S16 - Keep away from sources of ignition. S28 - After contact with skin, wash immediately with plenty of soap-suds. S33 - Take precautionary measures against static discharges. S36/37 - Wear suitable protective clothing and gloves. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S60 - This material and its container must be disposed of as hazardous waste. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| UN IDs | 2188 |
| Hazard Class | 2.3 |
| Toxicity | LCLO inhal (rat) 94 ppm (300 mg/m3; 15 min) PEL (OSHA) 0.05 ppm (0.2 mg/m3) TLV-TWA (ACGIH) 0.05 ppm (0.16 mg/m3) |
Arsenous hydride - References
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| solubility in water (g/100ml) | dissolved grams per 100ml of water: 8 × 10-2/20 ℃ |
| Use | For large-scale integrated circuits For the synthesis of arsenic organic compounds |
| category | compressed gas and liquefied gas |
| toxicity classification | highly toxic |
| acute toxicity | inhalation-rat LC50:390 mg/m3/10 min; Inhalation-mouse LC50:250 mg/m3/10 min |
| explosive hazard characteristics | explosive in air; in case of CL2,HNO3,(K NH3), open flame, strong vibration can explode |
| flammability hazard characteristics | near-fire spontaneous combustion; combustion produces toxic arsenide; thermal decomposition of flammable hydrogen |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; separate from oxidant |
| fire extinguishing agent | water |
| occupational standard | TWA 0.2 mg/m3; STEL 0.6 mg/m3 |
| spontaneous combustion temperature | Not established. Decomposes at 232 to 300°C to form elemental arsenic and hydrogen. |
| DOT Classification | 2.3, Hazard Zone A (Gas poisonous by inhalation) |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
| immediate life-threatening and health concentration | 3 ppm |
Last Update：2024-04-10 22:29:15
