ANTIMONY RED
antimony trisulfide
CAS: 1345-04-6
Molecular Formula: S3Sb2
ANTIMONY RED - Names and Identifiers
| Name | antimony trisulfide |
| Synonyms | antimony C.I. 77060 sulfanide ANTIMONY RED ANTIMONY SULFIDE hydrogen sulfide ANTIMONY(+3)SULFIDE antimony trisulfide antimony(+3) cation C.I. Pigment Red 107 ANTIMONY SULFIDE, OXY ANTIMONY (II) SULFIDE ANTIMONY SULFIDE, TRI ANTIMONY TRISULFIDE-RED ANTIMONY TRISULFIDE, BLACK Antimony trisulfide colloid [USAN] |
| CAS | 1345-04-6 |
| EINECS | 215-713-4 |
| InChI | InChI=1/6H2S.4Sb/h6*1H2;;;;/q;;;;;;;;;+3/p-6 |
ANTIMONY RED - Physico-chemical Properties
| Molecular Formula | S3Sb2 |
| Molar Mass | 339.71 |
| Density | 4.64g/mLat 25°C(lit.) |
| Melting Point | 550°C(lit.) |
| Boling Point | 1150 °C |
| Water Solubility | Soluble in concentrated acids. Insoluble in water. |
| Vapor Presure | 12600mmHg at 25°C |
| Appearance | powder |
| Specific Gravity | 4.64 |
| Color | Dark gray to black |
| Exposure Limit | ACGIH: TWA 0.5 mg/m3NIOSH: IDLH 50 mg/m3; TWA 0.5 mg/m3 |
| Merck | 14,713 |
| Stability | Stable. Incompatible with acids (reacting to form poisonous hydrogen sulfide), moisture, water. |
| Refractive Index | 4.303 |
| Physical and Chemical Properties | Character yellow-red amorphous powder. melting point 550 ℃ relative density 4.12 solubility insoluble in water and acetic acid. Soluble in concentrated hydrochloric acid, alcohol, ammonium hydrosulfide (NH4HS), potassium sulfide solution. yellow-red amorphous powder. The relative density was 4.12. Melting Point 550 °c. Do not dissolve in water, acetic acid. Soluble in concentrated hydrochloric acid, alcohol, ammonium hydrosulfide (NH4HS), potassium sulfide solution. |
| Use | Mainly used in the production of safety matches, fireworks, arms and in the rubber industry as hardener or pigment mainly used in the manufacture of matches and pyrotechnic, antimony salts and colored glass. Rubber industry used as vulcanizing agent and military use. |
ANTIMONY RED - Risk and Safety
| Hazard Symbols | Xn - Harmful |
| Risk Codes | R36/37/38 - Irritating to eyes, respiratory system and skin. R20/21/22 - Harmful by inhalation, in contact with skin and if swallowed. |
| Safety Description | S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. |
| UN IDs | UN 1549 6.1/PG 3 |
| WGK Germany | 2 |
| RTECS | CC9450000 |
| TSCA | Yes |
| HS Code | 28309020 |
| Hazard Class | 6.1 |
| Packing Group | III |
| Toxicity | LD i.p. in rats: 100.0 mg Sb/100 g (Bradley, Fredrick) |
ANTIMONY RED - Upstream Downstream Industry
| Raw Materials | Sulfuric acid Antimony |
| Downstream Products | Antimony(III) oxide |
ANTIMONY RED - Nature
Open Data Verified Data
yellow-red amorphous powder. The relative density was 4.12. Melting Point 550 °c. Do not dissolve in water, acetic acid. Soluble in concentrated hydrochloric acid, alcohol, ammonium hydrosulfide (NH4 HS), potassium sulfide solution.
Last Update：2025-06-10 22:55:16
ANTIMONY RED - Preparation Method
Open Data Verified Data
natural mineral processing method natural stibnite by screening, grinding and other processing and prepared antimony sulfide products.
Last Update：2022-01-01 11:04:03
ANTIMONY RED - Application
Open Data Verified Data
mainly used in the manufacture of matches and pyrotechnic, various antimony salts and colored glass. Rubber industry used as vulcanizing agent and military use.
Last Update：2025-08-19 16:24:40
ANTIMONY RED - Safety
Open Data Verified Data
packed in polyethylene plastic bag and polypropylene woven bag. The net weight of each bag is 20kg and 50kg. Toxic substances. Risk code: GB 6.1 class 61506. It should be stored in a ventilated and dry warehouse, and should not be stored together with potassium chlorate and other oxidants. Trivalent antimony compounds have a strong stimulating effect. Acute poisoning manifestations of the respiratory tract and digestive tract and skin irritation. The maximum allowable concentration of antimony sulfide (converted into Sb) is 1mg/m3. Staff should wear protective equipment such as anti-virus masks.
Last Update：2025-06-10 22:55:16
ANTIMONY RED - Reference Information
| (IARC) carcinogen classification | 3 (Vol. 47) 1989 |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| toxicity | trivalent antimony compounds have a strong stimulating effect. Acute poisoning manifestations of the respiratory tract and digestive tract and skin irritation. The maximum allowable concentration of antimony sulfide (converted into Sb) is 1 mg/m3. Staff should wear protective equipment such as anti-virus masks. |
| purpose | mainly used in the production of safety matches, arms and in the rubber industry as hardener or pigment mainly used in the manufacture of matches and pyrotechnic, various antimony salts and colored glass. Rubber industry used as vulcanizing agent and military use. used as analytical reagent and rubber vulcanizing agent, also used in the preparation of fireworks and explosives rubber vulcanizing agent. The manufacture of fireworks, glass, explosives, paints and pigments. |
| production method | There are three kinds of preparation methods: natural processing method, antimony White conversion method and direct method. Natural ore processing method. Natural stibnite by screening, grinding and other processing to produce antimony sulfide products. Antimony White conversion method. Reaction equation: Sb2O3 + 4Na2S + Ca(OH)2 + 3H2O → Sb2S3 + 8NaOH + CaS operation method: Sb2O3 1.80, Ca(OH)2 0.6, 6kg of H2O were mixed and heated at 80 °c for 1H. A Na2S solution was prepared by dissolving 2.41kg of 60% Na2S in 3L of water, and this Na2S solution was added to the above mixture over 30min at 80 ° C. With stirring, and the stirring was maintained for 30min. It was then acidified to pH 30% with 0.4 HCl in 3H. The temperature was raised to 95 ° C., stirred for 3H, cooled, filtered, washed and dried to obtain Sb2S3 pigment. Direct legal. Reaction equation: 3S + 2Sb → Sb2S3 operation method: after metal antimony is melted at high temperature, sulfur vapor is introduced into it, and antimony trisulfide is directly synthesized. The amount of sulfur is 103% to 115% of the stoichiometric amount, the reaction is stirred for 0.3 to 1H, and the reaction temperature is maintained at 650 to 850 °c. |
| category | toxic substances |
| toxicity grade | high toxicity |
| Acute toxicity | abdominal injection-rat LD50: 1390 mg/kg; Abdominal injection-mouse LD50: 209 mg/kg |
| flammability hazard characteristics | toxic hydrogen sulfide gas is emitted in dilute hydrochloric acid; Toxic sulfur oxide gas is emitted in hot sulfuric acid; Flammable; toxic sulfur oxide and antimonide smoke from combustion |
| storage and transportation characteristics | The warehouse is ventilated and dried at low temperature; It is stored and transported separately from acids and food |
| extinguishing agent | water, sand |
| Occupational Standards | TWA 0.5 mg (antimony)/m3; Tel 2.5 mg (antimony)/M3 |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-10 22:29:15
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Raw Materials for ANTIMONY RED
Downstream Products for ANTIMONY RED