Barium monosulfide
Barium sulfide
CAS: 21109-95-5
Molecular Formula: BaHS
Barium monosulfide - Names and Identifiers
| Name | Barium sulfide |
| Synonyms | BaS thioxobarium Barium sulfide BARIUM SULFIDE BARIUM SULPHIDE Barium monosulfide bariumsulfide(bas) BARIUM (II) SULFIDE Barium sulfide (BaS) BARIUM SULFIDE-YELLOW |
| CAS | 21109-95-5 |
| EINECS | 244-214-4 |
| InChI | InChI=1/Ba.S/q+2;-2 |
Barium monosulfide - Physico-chemical Properties
| Molecular Formula | BaHS |
| Molar Mass | 170.4 |
| Density | 4.25g/mLat 15°C(lit.) |
| Melting Point | 1200°C |
| Water Solubility | Soluble in water but insoluble in alcohol. |
| Vapor Presure | 12600mmHg at 25°C |
| Appearance | Powder |
| Specific Gravity | 4.25 |
| Color | Pale gray to yellow |
| Merck | 14,995 |
| Stability | Stable, but decomposes on heating. Incompatible with acids, oxidizing agents, water. |
| Sensitive | Moisture Sensitive |
| Physical and Chemical Properties | White equiaxed cubic crystal, sometimes light gray or yellow green, industrial products are light brown or black powder. melting point 1200 ℃ relative density 4.25(15 ℃) BaS solubility insoluble in alcohol. Soluble in water and decomposition into barium hydroxide and barium hydrosulfide. |
| Use | Mainly used in the manufacture of barium salt, Lithopone and luminous paint, also as rubber vulcanizing agent and leather depilatory agent |
Barium monosulfide - Risk and Safety
| Risk Codes | R20/22 - Harmful by inhalation and if swallowed. R31 - Contact with acids liberates toxic gas R50 - Very Toxic to aquatic organisms R36/37/38 - Irritating to eyes, respiratory system and skin. R41 - Risk of serious damage to eyes R35 - Causes severe burns |
| Safety Description | S28 - After contact with skin, wash immediately with plenty of soap-suds. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| UN IDs | UN 2813 4.3/PG 2 |
| WGK Germany | 2 |
| TSCA | Yes |
| Hazard Class | 4.3 |
| Packing Group | III |
Barium monosulfide - Upstream Downstream Industry
| Raw Materials | Barium sulfate |
| Downstream Products | Barium sulfate Barium chloride Thiourea Barium polysulfides |
Barium monosulfide - Nature
Open Data Verified Data
White equiaxed cubic crystals, sometimes light gray or yellow green, industrial products are light brown or black powder. Relative density 4. 25 (15 °c). Melting point 1200 °c. The hydrogen sulfide is gradually decomposed in humid air. Insoluble in alcohol. Soluble in water and decomposed into barium hydroxide
And barium hydrosulfide, aqueous solution is strong alkaline, corrosive, can burn the skin, so that hair loss. Toxic!
Last Update：2024-01-02 23:10:35
Barium monosulfide - Preparation Method
Open Data Verified Data
- barite: pulverized coal reduction method the barite and anthracite are mixed according to barite; Anthracite = 100,(25~27) ratio, and then crushed (5mm or less), after reduction roasting at 1000~1200 ℃ for 1~2H, the obtained crude barium sulfide melt (including BaS> 65%) is leached by hot water, and the concentration of barium sulfide solution reaches about 220g/L, A barium sulfide solution was obtained by filtration, evaporation and crystallization. The leached cinder can be discharged after washing with water, and the barium can be recovered or used as a building material.
- gas reduction method: a pure barium sulfide melt containing no coal or ash can be obtained by subjecting a barite to a reduction reaction by feeding hydrogen (natural gas) at 850 to 900 °c.
Last Update：2022-01-01 10:58:21
Barium monosulfide - Use
Open Data Verified Data
It is mainly used as a raw material for manufacturing various barium salts and Lithopone; It is also used as a rubber vulcanizing agent and a leather depilatory agent. Used in analytical chemistry to generate hydrogen sulfide. Agricultural acaricides and fungicides.
Last Update：2022-01-01 10:58:20
Barium monosulfide - Safety
Open Data Verified Data
- packaging method: Plastic bag outer composite plastic woven bag.
- health hazards: acute poisoning is mainly caused by accidental ingestion. Poisoning manifestations were Nausea, Vomit, Abdominal Pain, Diarrhea, slow pulse, progressive muscle paralysis, heart rhythm disorders, serum potassium decreased significantly. Death can result from heart rhythm disturbances and respiratory paralysis. The kidneys may be damaged. Inhalation of dust can cause poisoning, but gastrointestinal symptoms are not obvious.
- first aid measures: drink enough warm water to induce vomiting. Gastric lavage with 2% ~ 5% sodium sulfate solution, catharsis. The patient visited hospital.
- Protection Measure: workers should wear dust masks, glasses, gloves and protective clothing.
- Transportation Information: The Dangerous Goods number is 82013, and the classification and marking of commonly used Hazardous Chemicals (GB 13690-92) classify the substance as group 8.2 alkaline corrosion products.
Last Update：2022-01-01 10:58:22
Barium monosulfide - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Overview | barium sulfide (chemical formula: BaS), also known as black ash, is the sulfide of barium, appearance is white equiaxed cubic crystal, when not pure is light gray, yellow green, light brown or black powder, industrial products are light brown or black powder, there are blocks. The relative density of 4.25(15 deg C), the melting point of 1200 deg C. Insoluble in ethanol, soluble in water and decomposed into barium hydroxide and barium hydrosulfide, the aqueous solution is strongly alkaline. Corrosive, can burn the skin, so that hair loss. Hydrogen sulfide is also formed by reaction with water or an acid. Other products are barium hydroxide, barium hydrosulfide or other barium salts. Hexahydrate (BaS · 6H2O), hexagonal plate-like crystals can be precipitated from a saturated solution. Barium sulfide toxic, food will cause poisoning. In case of acid, hydrogen sulfide is released, and hydrogen sulfide and sulfur are decomposed by heating with concentrated acid. Hydrolysis in humid air releases toxic hydrogen sulfide gas. |
| solubility in water (g/100ml) | grams dissolved per 100ml of water at different temperatures (℃): 2.88g/0 ℃;4.89g/10 ℃;7.86g/20 ℃;10.4g/30 ℃;14.9g/40 ℃; 27.7g/60 ℃;49.9g/80 ℃;67.3g/90 ℃;60.3g/100 ℃ |
| toxicity | This product is a highly toxic drug. It may cause inflammatory disorders of the brain and its leptomeninges. See barium chloride dihydrate. |
| Application | mainly used in the manufacture of barium salt, Lithopone and luminescent paint, also used as rubber vulcanizing agent and leather depilatory agent used as analysis reagent and luminescent powder matrix, also used for the occurrence of arsenic-free hydrogen sulfide used as bactericide and acaricide in pesticide, it can control wheat rust and various fruit tree diseases. It is mainly used as a raw material for manufacturing various barium salts and Lithopone; It is also used as rubber vulcanizing agent and leather depilatory agent. Used in analytical chemistry to generate hydrogen sulfide. Agricultural acaricides and fungicides. mainly used in the manufacture of barium salt, Lithopone and luminous paint, also used as rubber vulcanizing agent and leather depilatory agent used in the preparation of barium salt and lithopone, also used as rubber vulcanizing agent and leather depilatory agent, it is used as an acaricide and a sterilant in agriculture. |
| production method | barite. Pulverized coal reduction method the barite and anthracite are mixed according to the ratio of barite: Anthracite = 100:(25~27) and then pulverized (5rmm or less), and then reduced and calcined at 1000~1200 ℃ for 1~2H, the obtained crude barium sulfide melt (including BaS>65%) was leached by hot water, and the concentration of barium sulfide solution reached about 220g/L. Then, the solution was left to clear, filtered, evaporated, A sulfurized hydrazine solution was prepared. After the coal cinder from BaSO4 4C → BaS 4CO is leached, it is discharged after washing with water, and the barium can be recovered or used as building materials. Gas reduction method will barite 850~900 deg C into hydrogen (natural gas) reduction reaction, can be obtained pure, without coal and Ash barium sulfide melt. The BaSO4 4H2 → BaS 4H2O barite and anthracite were pulverized at 950-1100 ℃, reduced and roasted, followed by sulfur and grinding to obtain barium polysulfide. BaSO4 2C → BaS 2CO2BaS 3S → BaS · S3 or BaS 4S → BaS · S4 |
| category | corrosive article |
| toxicity grade | high toxicity |
| Acute toxicity | oral-rat LD50: 375 mg/kg |
| explosive hazard characteristics | potential explosive |
| flammability hazard characteristics | spontaneous combustion in case of acid mist or wet air, releasing flammable and toxic hydrogen sulfide gas; toxic sulfur oxides and barium-containing fumes from combustion |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is stored separately from oxidants and acids. |
| extinguishing agent | carbon dioxide, dry powder. Prohibited water and acid-base extinguishing agent |
| Occupational Standard | TWA 0.5 mg (barium)/m3; PEL 1 mg (barium)/M3 |
Last Update：2024-04-09 20:49:11
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Raw Materials for Barium monosulfide
Downstream Products for Barium monosulfide