plumbous phosphite
Lead phosphite,dibasic
CAS: 12141-20-7
Molecular Formula: HO5PPb3
plumbous phosphite - Names and Identifiers
| Name | Lead phosphite,dibasic |
| Synonyms | 12141-20-7 Einecs 235-252-2 plumbous phosphite Leadoxidephosphonate Lead phosphite,dibasic Dibasic Lead Phosphite LEAD PHOSPHITE, DIBASIC Dibasic lead(ii) phosphite trilead dioxide phosphonate leadoxidephosphonate(pb3o2(hpo3)) |
| CAS | 12141-20-7 |
| EINECS | 235-252-2 |
| InChI | InChI=1/H3O3P.2O.3Pb.2H/c1-4(2)3;;;;;;;/h4H,(H2,1,2,3);;;;;;;/q;;;;;+2;;/p-2/rH3O3P.2OPb.H2Pb/c1-4(2)3;2*1-2;/h4H,(H2,1,2,3);;;1H2/q;;;+2/p-2 |
plumbous phosphite - Physico-chemical Properties
| Molecular Formula | HO5PPb3 |
| Molar Mass | 733.58 |
| Water Solubility | 12.2mg/L at 20℃ |
| Stability | Stability |
| Physical and Chemical Properties | White or yellowish powder, sweet. The relative density was 6.94. Refractive index 2.25. Soluble in hydrochloric acid, nitric acid, ammonium acetate solution; Insoluble in water and organic solvents. It becomes gray-black at about 200 °c and yellow at about 450 °c. It has excellent thermal stability and weather resistance. Has the ability to resist oxidation and shielding ultraviolet rays. The initial colorability is excellent, and a white product can be obtained. Unstable, self-decomposing. Burning in case of fire. Toxic! |
| Use | As a stabilizer for opaque PVC products |
plumbous phosphite - Upstream Downstream Industry
| Raw Materials | Acetic acid Phosphorous acid Lead(II) oxide |
plumbous phosphite - Nature
Open Data Verified Data
white or yellowish powder, sweet. The relative density was 6. 94. Refractive index 2.25. Soluble in hydrochloric acid, nitric acid, ammonium acetate solution; Insoluble in water and organic solvents. It becomes gray-black at about 200 °c and yellow at about 450 °c. It has excellent thermal stability and weather resistance. Has the ability to resist oxidation and shielding ultraviolet rays. The initial colorability is excellent, and a white product can be obtained. Unstable, self-decomposing. Burning in case of fire. Toxic!
Last Update：2024-01-02 23:10:35
plumbous phosphite - Preparation Method
Open Data Verified Data
- lead oxide method: first, the metal lead is heated and melted in a lead melting furnace, and then sent to the yellow Dan furnace for oxidation to lead monoxide. Phosphorus trichloride was added into the reactor to hydrolyze at 50 ℃ and slowly raise the temperature. It was concentrated at 146~148 ℃, and activated carbon was added to decolorize and filter to prepare phosphorous acid. The metered amount of lead oxide is first mixed with water to form a slurry and added to the synthesis kettle, heated to about 70 ° C, with acetic acid as the catalyst, and added with constant stirring. When the pH value reaches 6.9, A white suspension of lead dibasic phosphite is produced, and dehydrating agent is added to dehydrate the suspension, filtered and dried to obtain a finished lead dibasic phosphite.
- lead water method: metal lead was added to a reactor and dissolved with acetic acid, and a caustic soda solution was slowly added under stirring for reaction to produce lead hydroxide, and sodium acetate was removed by filtration. Lead hydroxide is added into the synthesizer, and phosphorous acid is added quantitatively under constant stirring to react, to generate lead dibasic phosphite, which is filtered and dried to obtain a finished lead dibasic phosphite.
Last Update：2022-01-01 11:03:13
plumbous phosphite - Use
Open Data Verified Data
mainly used for opaque PVC hard and soft products, especially for outdoor cable and wire, Building Board (such as corrugated board), pipe and other stabilizers. It has a synergistic effect with tribasic lead sulfate and dibasic lead stearate. General dosage of 1% ~ 5%.
Last Update：2022-01-01 11:03:12
plumbous phosphite - Safety
Open Data Verified Data
dibasic lead Phosphite has toxic effects on human body, especially can change the nervous system, blood and blood vessels, and has great influence on protein metabolism, cell energy balance and cell genetic system. The maximum allowable concentration in air is 0. O1mg/m3, and the average concentration in working days is
0.007 mg/m3. Operators should wear work clothes, masks and other labor protection products. When the vapor concentration is high, the filter type gas mask should be worn, and the fresh air should be forced to be supplied. Eating and smoking are prohibited during working hours in the workplace, and hot water must be used to take a shower after work. Packed with plastic woven bags lined with polyethylene plastic bags, each with a net weight of 25kg. The package should be printed with the obvious "toxic product" mark. Flammable solids, Hazard code: GB4.1, class 41005. UN N0.2989; IMDG code 4.1, class 1. Should be stored in a cool, ventilated, dry warehouse, can not be stacked in the open air, packaging must be sealed to prevent moisture. To avoid acid gas, hydrogen sulfide gas fumigation to avoid deterioration, not with the edible goods co-storage and transportation. During transportation, treatment should be carried out in the presence of drugs to prevent rain and sun exposure. When loading and unloading should be light to prevent packaging damage. Storage period is half a year. When there is a fire, the firemen should wear gas masks, water, sand and all kinds of fire retardants.
Last Update：2022-01-01 11:03:13
plumbous phosphite - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| use | mainly used for hard and soft products of opaque polyvinyl chloride, especially stabilizers for outdoor cables and wires, building boards (such as corrugated boards), pipes, etc. It has a synergistic effect with tribasic lead sulfate and dibasic lead stearate. The general dosage is 1% ~ 5%. Used as a stabilizer for polyvinyl chloride opaque products |
| production method | lead oxide method first heats and melts metal lead in a lead melting furnace, and then sends it to Huang Dan furnace for oxidation to lead monoxide. Phosphorus trichloride is added to the reactor to hydrolyze at 50 ℃, slowly heats up, concentrates at 146~148 ℃, adds activated carbon to decolorise, and filters to obtain phosphorous acid. The metered lead oxide is first mixed with water into a slurry and added to the synthesis kettle, heated to about 70°C, acetic acid is used as a catalyst, and a quantitative amount of phosphorous acid is added under continuous stirring. When the Ph value reaches 6.9, white Dibasic lead phosphite suspension is generated, dehydrated by adding a dehydrating agent, filtered and dried to obtain a finished product of dibasic lead phosphite. Its 2Pb O2 → 2PbOPCI3 3H2O → H3PO3 3HCI3PbO H3PO3[Hac]→ 2PbO?PbHPO3?0.5H2O 0.5H2O lead water method adds metal lead to the reactor to dissolve with acetic acid, slowly adds caustic soda solution under stirring for reaction, generates lead hydroxide, and filters to remove sodium acetate. Lead hydroxide is added to the synthesizer, and phosphorous acid is quantitatively added under constant stirring to react to generate dibasic lead phosphite. After filtration and drying, a finished product of dibasic lead phosphite is prepared. Its 2Pb(OH)2 H3PO3 → this product is 2.5H2O |
Last Update：2024-04-10 22:29:15
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Product Name: Lead phosphite,dibasic Request for quotationCAS: 12141-20-7
Tel: +86-17551318830
Email: r@reformchem.com
Mobile: +86-17551318830
QQ: 3787852685
Spot supply
Product Name: Lead phosphite,dibasic Request for quotationCAS: 12141-20-7
Tel: +86-17551318830
Email: r@reformchem.com
Mobile: +86-17551318830
QQ: 3785839865
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Raw Materials for plumbous phosphite