Tribasic Lead Sulphate
Lead Sulfate Tribasic
CAS: 12202-17-4
Molecular Formula: H4O5PbS-2
Tribasic Lead Sulphate - Names and Identifiers
| Name | Lead Sulfate Tribasic |
| Synonyms | Lead sulfate tribasic Lead Sulfate Tribasic Tribasic Lead Sulphate LEAD TRIBASIC SULPHATE lead sulphate tribasic Lead sulfate, tribasic tetralead trioxide sulfate tetralead trioxide sulphate Lead Oxide Sulfate Monohydrate Lead oxide sulfate (Pb4O3(SO4)) Tribasic lead sulfate(Pb4O3(SO4)) |
| CAS | 12202-17-4 |
| EINECS | 235-380-9 |
| InChI | InChI=1/H2O4S.3O.4Pb.2H/c1-5(2,3)4;;;;;;;;;/h(H2,1,2,3,4);;;;;;;;;/q;;;;;;;+2;;/p-2/rH2O4S.3OPb.H2Pb/c1-5(2,3)4;3*1-2;/h(H2,1,2,3,4);;;;1H2/q;;;;+2/p-2 |
Tribasic Lead Sulphate - Physico-chemical Properties
| Molecular Formula | H4O5PbS-2 |
| Molar Mass | 323.29 |
| Density | 6.84[at 20℃] |
| Water Solubility | 102mg/L at 20℃ |
| Storage Condition | Room Temprature |
| Stability | Stable, but may be light sensitive. |
| Physical and Chemical Properties | White or yellowish powder. Sweet. |
| Use | Used as a heat stabilizer for polyvinyl chloride plastics, mainly used in opaque soft and hard products and cable materials |
Tribasic Lead Sulphate - Risk and Safety
| UN IDs | 2291 |
| Hazard Class | 6.1(b) |
| Packing Group | III |
Tribasic Lead Sulphate - Upstream Downstream Industry
| Raw Materials | Acetic acid Sulfuric acid Lead(II) oxide |
Tribasic Lead Sulphate - Nature
Open Data Verified Data
white or yellowish powder. Sweet. The relative density was 6.9. Melting point 820 °c. Very slightly soluble in water, insoluble in ethanol, soluble in nitric acid, hot concentrated hydrochloric acid, ammonium acetate, sodium acetate solution, partially soluble in acetic acid. Variable yellow in the sun, especially when wet. Black lead sulfide was generated when exposed to sulfide. Easy to absorb moisture. Unstable. Toxic!
Last Update：2024-01-02 23:10:35
Tribasic Lead Sulphate - Preparation Method
Open Data Verified Data
lead oxide method: the lead oxide is mixed with suitable amount of water and then sent to the synthesizer, and a small amount of acetic acid is added. Under stirring, Pb:H2 S04 (92. 5) :100 ; 12.6 sulfuric acid was added for reaction, and the content was checked after 1H. The slurry was dried and crushed to obtain tribasic lead sulfate.
Last Update：2022-01-01 11:04:06
Tribasic Lead Sulphate - Use
Open Data Verified Data
with the use of lead dibasic phosphite can make the plastic thermal stability and electrical insulation performance is good, and can improve the plastic weather resistance. It is mainly used as a stabilizer for PVC plastic opaque or translucent products (such as PVC cable tube, plastic sandal, loafers, yarn tube, etc.). In addition, it is also used for pigment production and the like.
Last Update：2022-01-01 11:04:05
Tribasic Lead Sulphate - Safety
Open Data Verified Data
packed in a barrel, iron drum or plastic woven bag lined with a polyethylene plastic film bag with a net weight of 25kg, 40kg or 50kg per barrel (bag). The package should be marked with "drug. It is an inorganic and dangerous drug. Code: 83028. Should be stored in a cool, ventilated, dry warehouse. It is not allowed to be stored and mixed with edible articles. Transport should be protected from rain and sun exposure. Storage for more than two months, the inspection content should be according to HG 2-1053-77 Article 11 after drying analysis. When there is a fire, it can be suppressed by water and sand. Protection: see lead sulfate.
Last Update：2022-01-01 11:04:06
Tribasic Lead Sulphate - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| introduction | basic lead sulfate mainly includes tribasic lead sulfate (abbreviated as: 3BS) and tetrabbasic lead sulfate (abbreviated as: 4BS), of which tribasic lead sulfate is widely used in the plastic industry, due to its excellent heat resistance, electrical insulation, light stability, non-discoloration and other advantages, and has a thermal stabilizing effect on polyvinyl chloride, it is widely used in PVC insulation materials, paint pigments, wires, cables and additives to improve battery performance to prepare lead-acid batteries. |
| apply | 3BS as an additive. add the positive plate made of lead paste to assemble the battery according to 3% of the mass of lead paste, and carry out charge and discharge tests. compared with the conventional internalized lead-calcium alloy lead-acid battery, its high-current discharge performance is improved and the cycle life of the battery pack is significantly prolonged. The applications of tribasic lead sulfate stabilizers include thermal stability of flexible polyvinyl chloride wire insulation compounds, rigid and flexible polyvinyl chloride foams, rigid vinyl profiles, and polyvinyl chloride plastisol. The usual content of tribasic lead sulfate required in PVC ranges from 2 to 7 parts per 100 parts of resin (2.7 phr), depending on the intended use of the vinyl product. |
| prepare | 1, let 1.2kg of waste lead acid leaching paste stand for 3 hours, discard the upper liquid, and obtain 0.8kg of precipitate, I .e. acid-containing lead paste. 2. Add 4.0kg of water to the lead paste, stir evenly, let stand for 1h, use a centrifuge to centrifuge at 3000r /min for 15min to discard the upper liquid and impurities, and repeat the water washing and separation steps three times to obtain 0.7kg of deacidification lead paste with pH = 6. The content of PbSO4 in deacidification lead paste was determined to be 90wt%, I. e. 2.1mol. 3. According to the feeding ratio of (MPbSO4 + MH2SO4):(MPbO -MH2SO4)= 1:3 and MPbO:MPbSO4 = 4, 2.2kg of lead oxide powder (oxidation degree 85wt%) (molar amount of lead oxide MPbO = 8.4 mol), 122.5g of 42wt% dilute sulfuric acid (molar amount of sulfuric acid MH2SO4 = 0.53 mol) and 11.0kg of deionized water are respectively taken. First, deionized water is heated to 75 ℃; Secondly, the deacidification lead paste and lead oxide powder are fully mixed at the temperature, added to deionized water, kept at a constant temperature of 75~80 ℃, and fully stirred to form a homogeneous slurry. Then dilute sulfuric acid is added into the slurry dropwise within 1.0h under the condition of constant temperature stirring at 75~80 ℃. After dropping, keep the temperature for 12 hours, filter the product to obtain precipitation, after being fully dried and crushed at 75 ℃, 2.9kg of tribasic lead sulfate product with purity of 90% was obtained. The tribasic lead sulfate product can be used as an additive and mixed with lead powder to prepare lead paste for storage batteries. |
| use | when used in combination with dibasic lead phosphite, the plastic can have good thermal stability and electrical insulation properties, and can improve the weather resistance of the plastic. Mainly used as a stabilizer for PVC plastic opaque or translucent products (such as PVC cable hard tubes, plastic sandals, slippers, yarn tubes, etc.). In addition, it is also used in pigment production, etc. Used as an analytical reagent and also used in pigment manufacturing Used as a heat stabilizer for polyvinyl chloride plastics, mainly used in opaque soft and hard products and cable materials |
| production method | lead oxide method first adds a proper amount of water to adjust the slurry of lead oxide and then sends it to the synthesizer, then adds a small amount of acetic acid, adds Pb:H2SO4(92.5%)= 100:12.6 to react with sulfuric acid under stirring, and tests the content after 1 hour. the slurry is dried and crushed to obtain tribasic lead sulfate. Its 2PO 2CHCOOH → Pb(CH3COO)2?Pb(OH)2Pb(CH3COO)2?pb(OH)2 2H2SO4 → 2PbSO4 2CH3COOH 2H2O3PbO PbSO4 H2O → 3PbO?PbSO4?H2O lead oxide method. Reaction equation: 4PbO H2SO4 → 3PbO · PbSO4 · H2O Operation method: 1175.0ml of lead oxide suspension (78g/L,pH9.9) and 0.47g of hydroxylamine sulfate were added in a 2L beaker at a pH of 9.6. Stir and raise the temperature to 70 ℃. 26.22ml(3.86mol/L) sulfuric acid was added within 10s, the pH value was 6.2 in the initial stage, and the mixture was heated at 65~70 ℃ for 60min to convert to obtain tribasic lead sulfate (pH = 8.3). Stearic acid, 2.08ml ammonia water (0.736mol/L) and 50ml water were added into a 200ml beaker, heated at 90 ℃, and emulsified with strong stirring to form ammonium soap. The formed ammonium soap is added to the above-mentioned tribasic lead sulfate, stirred at 65~70 ℃ for 60min, filtered, dried at 90 ℃, and crushed to obtain tribasic lead sulfate with high whiteness. |
Last Update：2024-04-10 22:29:15
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Raw Materials for Tribasic Lead Sulphate