6865-35-6
Barium stearate
CAS: 6865-35-6
Molecular Formula: C36H70BaO4
6865-35-6 - Names and Identifiers
| Name | Barium stearate |
| Synonyms | stavinor40 Barium stearate BARIUM STEARATE Einecs 229-966-3 barium distearate barium octadecanoate Barium bis(stearate) barium dioctadecanoate Barium Stearate (Light) barium distearate, pure STEARIC ACID BARIUM SALT octadecanoic acid barium salt Bariumstearatetechgrwhitepowder Bis(octadecanoic acid)barium salt |
| CAS | 6865-35-6 |
| EINECS | 229-966-3 |
| InChI | InChI=1/C18H36O2.Ba/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h2-17H2,1H3,(H,19,20);/q;+2/p-1 |
6865-35-6 - Physico-chemical Properties
| Molecular Formula | C36H70BaO4 |
| Molar Mass | 704.27 |
| Density | 1.145g/cm3 |
| Melting Point | >225℃ |
| Water Solubility | insoluble H2O, alcohol [HAW93] |
| Appearance | Powder |
| Color | white |
| Odor | odorless |
| Storage Condition | Sealed, cool and dry. |
| Physical and Chemical Properties | barium stearate is a white light powder with a specific gravity of 1.145, insoluble in water, soluble in hot ethanol, and decomposed into stearic acid and the corresponding barium salt in case of strong acid. This product is hygroscopic. This product is the stabilizer and lubricant of polyvinyl chloride, in all alkaline earth metal stearate, this product has the best long-term heat resistance |
| Use | Used as mechanical high temperature resistant lubricant, rubber products of high temperature resistant powder. Can be used as a stabilizer and lubricant of polyvinyl chloride, in all alkaline earth metal stearate, this product has the best long-term heat resistance. Mainly used for soft transparent film, thin plate, artificial leather and hard plate, tube, etc. It can also be used as a high temperature release agent and a high temperature lubricant for mechanical use. |
6865-35-6 - Risk and Safety
| Risk Codes | 20/22 - Harmful by inhalation and if swallowed. |
| Safety Description | 28 - After contact with skin, wash immediately with plenty of soap-suds. |
| UN IDs | 1564 |
| RTECS | WI2840000 |
| HS Code | 29159090 |
| Toxicity | LD50 orl-rat: 4 g/kg GISAAA 39(11),91,74 |
6865-35-6 - Upstream Downstream Industry
6865-35-6 - Introduction
There's a hint of fat. Toxic. Barium stearate is toxic, soluble in benzene, toluene and other non-polar solvents, and almost insoluble in water, ethanol and ether. It is heated and dissolved in an organic solvent and then cooled to form a jelly. It has water absorption in the air and has no sulfide pollution. It is decomposed into stearic acid and corresponding barium salt in case of strong acid.
Last Update：2022-10-16 17:27:56
6865-35-6 - Reference Information
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| Overview | barium stearate, also known as "barium octaate", Chemical formula Ba(C18H35O2)2. Molecular weight 704.13. White fine powder. The melting point of 160 deg C, the relative density of 1.15. Insoluble in water, insoluble in cold ethanol, soluble in hot ethanol, benzene, toluene and other non-polar solvents, dissolved in organic solvents heated after cooling into a gum. In the case of strong acid decomposition into stearic acid and the corresponding barium salt. Water absorption in air. Preparation Method: stearic acid and barium carbonate or barium hydroxide, or sodium stearate solution and Dilute barium chloride solution reaction prepared. Can be used as waterproof products, alkali pump packing, can also be used as high temperature resistant machine lubricants, fillers; PVC and other plastics light-resistant, heat-resistant stabilizers, rubber products, high temperature powder molding agent. Barium stearate is toxic, the toxicity coefficient T = 2, the typical poisoning symptoms are Vomit, Abdominal Pain, diarrhea, blood pressure rise, pulse beat disorder. |
| Main Function | This product can be used as a heat stabilizer for polyvinyl chloride and Vinyl Chloride Copolymer, with excellent lubricity and good long-term heat resistance, the stabilizing efficacy is greater than that of calcium stearate, but less than that of lead stearate. The combination with cadmium soap, zinc soap or epoxy compound has a good synergistic effect. The general dosage is 0.1~2%. With a small amount of lead-based stabilizer can improve the electrical properties of the product. Barium stearate is mainly used for transparent films, thin sheets, artificial leather, hard plates and pipes. In soft products, often with cadmium, cadmium-zinc or cadmium-lead soap. It is often used in combination with zinc soap in the formulation of vulcanized artificial leather. In the pipe and cable material is often combined with the base lead salt and lead soap. In the corrugated board, often with cadmium soap, lead soap and base lead salt. This product has no hydrogen sulfide pollution, but the amount of barium stearate is large, and the phenomenon of segregation and scaling occurs. |
| stearate heat stabilizer | stearate heat stabilizer is mainly calcium stearate, barium stearate, cadmium stearate, magnesium stearate, lithium stearate, zinc stearate, aluminum Stearate, aluminum distearate, lead stearate, strontium stearate, cobalt stearate, sodium stearate, stannous stearate, etc. Their representative species is barium stearate. The structural formula is as follows: it is prepared from stearic acid after saponification with caustic soda, and then double decomposition with barium chloride solution. The average molecular weight is 682.6, which is a white fine powder with a barium content of 19.5% to 20.5%. Free fatty acid content ≤ 1%, moisture ≤ 1%, fineness (200 mesh through) ≥ 99%. Relative density of 1.145, melting point of 225 ℃, insoluble in water, soluble in benzene, toluene, hot ethanol and other non-polar solvents, dissolved in organic solvents after heating after cooling as a gum. In the case of strong acid decomposition of stearic acid and the corresponding barium salt. It is easy to absorb moisture in the air. It acts as a heat stabilizer for polyvinyl chloride and vinyl chloride copolymers, and also as a lubricant. It has the best long-term heat resistance and excellent lubricity. The stabilizing effect is better than that of calcium stearate, but lower than that of lead stearate. With cadmium soap, zinc soap or epoxy compounds, there is an excellent synergistic effect. The usual dosage is 0.1% -2%. If a small amount of lead-based stabilizer is added, the electrical properties of the product can be improved. This product is mainly used for soft transparent film, sheet and hard plate, artificial leather and pipe. In general soft products, often with cadmium soap, cadmium-zinc or cadmium-lead soap used in conjunction with; In the vulcanized artificial leather formula is often used with zinc soap; in pipe and cable materials, it is often combined with basic lead salt and lead soap; In corrugated board, it is often used with cadmium soap, lead soap and basic lead salt. This product can also be used as high temperature release agent and mechanical high temperature lubricant. This product is non-hydrogen sulfide pollution, but toxic. |
| calcium stearate | calcium stearate is derived from the metathesis reaction of sodium stearate and calcium chloride, and can be used as a heat stabilizer for polyvinyl chloride, has excellent lubricity. Thermal stability is generally less effective than barium stearate, lead stearate, tin stearate and cadmium stearate. But it is cheap and easy to get, low toxicity, good processability. With zinc soap and epoxy compounds in combination with a synergistic effect, can improve the thermal stability, commonly used in food packaging films, medical devices and other requirements of non-toxic soft products. With the base lead salt and lead soap and used in hard products, can improve the rate of gelation. This product is used in polyethylene and polypropylene, which can eliminate the adverse effects of residual catalyst on resin color and stability. This product is also widely used as polyolefin, polyester reinforced plastics, phenolic resin, amino resin and other thermosetting plastics lubricants and release agents. |
| Use | used as high temperature resistant lubricant for machines, high temperature resistant additive for rubber products, light and heat resistant stabilizer for PVC plastics used as heat stabilizer for PVC products used as waterproofing agent, lubricant and bearing lining material used as high temperature resistant lubricant for machinery, high temperature resistant powder of rubber products. Can be used as a stabilizer and lubricant of polyvinyl chloride, in all alkaline earth metal stearate, this product has the best long-term heat resistance. Mainly used for soft transparent film, thin plate, artificial leather and hard plate, tube, etc. It can also be used as a high temperature release agent and a high temperature lubricant for mechanical use. |
| category | toxic substances |
| toxicity grade | poisoning |
| Acute toxicity | oral-rat LD50: 2506 mg/kg; Oral-mouse LD50; 1832 mg/kg |
| flammability hazard characteristics | flammable, combustion-irritating smoke |
| storage and transportation characteristics | ventilation and low temperature drying |
| fire extinguishing agent | dry powder, foam, sand, carbon dioxide, water mist |
Last Update：2024-04-09 21:11:58
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