Ammoniumsulfidesolution
Ammonium sulfide
CAS: 12135-76-1
Molecular Formula: H8N2S
Ammoniumsulfidesolution - Names and Identifiers
| Name | Ammonium sulfide |
| Synonyms | thioxoammonium Ammonium sulfide diammoniumsulfide Ammonium bisulfide ammoniummonosulfide trueammoniumsulfide Ammoniumsulfidesolution ammoniumsulfide((nh4)2s) ammoniumsulfide,solution ammoniumsulfide(solution) Ammonium sulfide, solution ammoniumsulfideaqueoussolution |
| CAS | 12135-76-1 |
| EINECS | 235-223-4 |
| InChI | InChI=1/HNS/c1-2/h1H/p+1 |
| InChIKey | UXXGWUQNRMPNKH-UHFFFAOYSA-N |
Ammoniumsulfidesolution - Physico-chemical Properties
| Molecular Formula | H8N2S |
| Molar Mass | 68.14 |
| Density | 1g/mLat 25°C |
| Melting Point | decomposes [HAW93] |
| Boling Point | 40°C |
| Flash Point | 90°F |
| Water Solubility | Miscible with water, alcohol and liquid ammonia. |
| Vapor Presure | 600 hPa at 20 °C |
| Appearance | Liquid |
| Specific Gravity | 1.2 |
| Color | Yellow to orange |
| Odor | Ammonia odour |
| Merck | 13,560 |
| pKa | 3.42±0.70(Predicted) |
| Storage Condition | room temp |
| Stability | Stable. Pure material is highly flammable - note wide explosion limits. Incompatible with strong oxidizing agents, strong acids, copper, brass, bronze, strong bases, zinc, aluminium. |
| Explosive Limit | 4-46% |
| Refractive Index | n20/D 1.467 |
| Physical and Chemical Properties | Chemical formula (NH4)2. Molecular weight 68.14. Light yellow crystals (>-18 ℃) or colorless liquid, with hygroscopicity. Toxic. Decomposition before melting point. Easily soluble in cold water, alkaline aqueous solution, hot water decomposition, soluble in ethanol, alkali solution, soluble in liquid ammonia. Long-standing yellow, with hydrogen sulfide and ammonia odor. Easy to decompose, in the air quickly into polysulfide and thiosulfate, only in less than 0 deg C and dry air is stable, it is often formulated into aqueous solution, commercial products mostly ammonium sulfide solution. Preparation Method: by hydrogen sulfide gas and ammonia reaction, can also be obtained by sodium hydrosulfide and ammonium sulfate solution and ammonia reaction. Purposes: ammonium sulfide can be used as chromatographic analysis reagent, thallium trace analysis reagent, photographic chromogenic reagent, Mercury thickening method of blackening agent, nitrocellulose denitration agent, chemical analysis and purification of important reagents, it is used as a regenerant after desulfurization of activated carbon in the production of chemical fertilizer. |
Ammoniumsulfidesolution - Risk and Safety
| Risk Codes | R11 - Highly Flammable R31 - Contact with acids liberates toxic gas R34 - Causes burns R50 - Very Toxic to aquatic organisms R10 - Flammable |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. S16 - Keep away from sources of ignition. |
| UN IDs | UN 2683 8/PG 2 |
| WGK Germany | - |
| FLUKA BRAND F CODES | 10-13-23 |
| TSCA | Yes |
| HS Code | 28309090 |
| Hazard Class | 8 |
| Packing Group | II |
Ammoniumsulfidesolution - Reference Information
| FEMA | 2053 | AMMONIUM SULFIDE |
| pH range of acid-base indicator color change | 9.5 ( 45% aqueous solution) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| inorganic sulfide | ammonium sulfide is a kind of inorganic sulfide which is widely used in China's chemical industry, we know that heavy metal sulfides are difficult to dissolve in water, and even difficult to dissolve in non oxidizing acids, with hydrogen sulfide or soluble sulfides, such as sodium sulfide, ammonium sulfide, and metal ions, poorly soluble sulfides can be precipitated from solution, and the reaction equation is as follows: CuSO4 H2S = cus↓ H2SO4;MnSO4 (NH4)2S = mns↓ (NH4)2SO4. |
| Use | hard acid fiber dehardening agent, drop analysis of thallium. Reagent for analysis and photography. used as chromatographic reagent |
| production method | 1.? Distilled water was heated to boiling to remove carbon dioxide, and aqueous ammonia (chemically pure, 25% to 28%) was added to prepare an 8% aqueous ammonia solution. The industrial sodium sulfide is broken into small pieces, and industrial hydrochloric acid is added to the hydrogen sulfide generator to react: the generated hydrogen sulfide gas is washed with distilled water, and then the above 8% ammonia solution is passed to saturation: the qualified ammonium hydrosulfide solution is added to the same volume of 8% ammonia water, and the reaction is to obtain ammonium sulfide solution: if the content is less than 16.5% ~ 20%, the ammonium hydrosulfide solution can be added again until qualified. |
| category | corrosive article |
| flammability hazard characteristics | decomposition of toxic ammonia and hydrogen sulfide at room temperature; toxic hydrogen sulfide gas |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; Stored separately from acid |
| extinguishing agent | Water |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:39:43
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