ARSENIC TRISULFIDE
ARSENIC (III) SULFIDE
CAS: 1303-33-9
Molecular Formula: A2S3
ARSENIC TRISULFIDE - Names and Identifiers
ARSENIC TRISULFIDE - Physico-chemical Properties
| Molecular Formula | A2S3 |
| Molar Mass | 246.03 |
| Density | 3.43 g/mL at 25 °C(lit.) |
| Melting Point | 300 °C(lit.) |
| Boling Point | 707 °C |
| Flash Point | 707°C |
| Water Solubility | Insoluble in water. Soluble in alkali sulfides or carbonate, hot HCl |
| Appearance | Form Powder, color Yellow to orange |
| Storage Condition | Poison room |
| Stability | moisture sensitive |
| MDL | MFCD00003435 |
| Physical and Chemical Properties | Chemical properties orpiment is one of arsenic sulfide minerals. Monoclinic crystal system, the crystal is short column, plate, aggregate is flaky, rod, powder or kidney with radial structure. The color is lemon yellow (slightly green). The streaks are bright yellow. Grease gloss to diamond gloss. The sheet is transparent and flexible. Hardness 1.5~2, density 3.4~3.5g/cm3. Non-conductive. The charcoal is fusible, the flame is blue, white smoke and garlic smell. It is fusible to potassium hydroxide and has no residue. Mainly produced in low-temperature hydrothermal deposits, often with realgar, stibnite, white iron ore, quartz and other symbiosis. |
| Use | Use of titanium nickel Yellow weather resistance and durability than rutile titanium dioxide, can be used for steel coatings, automotive coatings, vehicles and aviation coatings, also used for signs, road signs, coatings and plastics. For titanium nickel yellow excellent stability, can be used in high temperature application of high temperature coating, plastic injection molding at high temperature and other heat resistant coating. Titanium nickel yellow chemical stability, can be used in chemical plant equipment and wall coatings, cement coatings, latex coatings and acid-cured amino resin coatings. Titanium nickel yellow non-toxic, can be used in toy paint and plastic toys, food packaging plastics and food cans printing ink applications. The main disadvantage of titanium nickel yellow is light color, low coloring power, particle size is far more coarse than titanium dioxide, poor dispersion, not alone as a yellow pigment, used as a yellow base and other organic yellow pigment with the use, for light-colored weather-resistant external coating. |
ARSENIC TRISULFIDE - Risk and Safety
| Risk Codes | R23/25 - Toxic by inhalation and if swallowed. R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. |
| Safety Description | S20/21 - S28 - After contact with skin, wash immediately with plenty of soap-suds. 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 | UN 1557 6.1/PG 2 |
| WGK Germany | 3 |
| RTECS | CG2638000 |
| TSCA | Yes |
| Hazard Class | 6.1 |
| Packing Group | III |
ARSENIC TRISULFIDE - Upstream Downstream Industry
| Raw Materials | Metatitanic acid Rutile realgar |
| Downstream Products | Pigment yellow 37 (C.I. 77199) (Strontium-Calcium) Chrome Yellow |
ARSENIC TRISULFIDE - Nature
| Specific gravity | 3.43 |
| Merck | 14,806 |
| Ksp precipitation equilibrium constant | pKsp: 21.68 |
| EPA chemical information | Arsenic trisulfide (1303-33-9) |
Last Update：2024-04-10 22:29:15
ARSENIC TRISULFIDE - Security information
| toxic substance data | 1303-33-9(Hazardous Substances Data) |
Last Update：2024-04-10 22:29:15
ARSENIC TRISULFIDE - Uses and synthesis methods
production method
After fully washing the hydrated titanium dioxide in the production of titanium dioxide by the sulfuric acid method, send it to the beating tank, and add nickel and antimony compounds with sufficient activity in a certain proportion, and the treatment agent that can promote the crystal conversion during calcination After that, it is mixed evenly according to a certain concentration, after filtering, the filter cake is sent to the rotary kiln, and the calcination is completely lattice conversion at a temperature of about 1000 ℃. If the calcination temperature is too high, material sintering will occur and affect the performance of the finished product. Therefore, it can be treated differently according to different purposes.
category
toxic substances
toxicity classification
High toxicity
acute toxicity
oral-rat LD50: 185 mg/kg; oral-mouse LD50: 254 mg/kg
explosive hazard characteristics
Reacts violently with oxidants, such as hydrogen peroxide or with potassium nitrate and sulfur
flammability hazard characteristics
Combustible; combustion produces toxic sulfur oxides and arsenide fumes; reacts with water or acid to produce toxic combustible fumes
storage and transportation features
Ventilated and dry at low temperature; stored separately from warehouse food ingredients and acids
fire extinguishing agent
Dry powder, foam, sand, carbon dioxide
occupational standards
TWA 0.01 mg (arsenic)/m3
Last Update：2024-04-09 20:52:54
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CAS: 1303-33-9
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Raw Materials for ARSENIC TRISULFIDE
Downstream Products for ARSENIC TRISULFIDE