LEAD (II) BORATE MONOHYDRATE
Lead borate
CAS: 14720-53-7
Molecular Formula: BH3O2Pb
LEAD (II) BORATE MONOHYDRATE - Names and Identifiers
| Name | Lead borate |
| Synonyms | 14720-53-7 Lead borate Lead(Ⅱ) borate LEAD BORATE 1 KG boric acid, lead salt Lead Borate Monohydrate Boron lead oxide (B2PbO4) Lead metaborate monohydrate LEAD (II) BORATE MONOHYDRATE boranolate, oxo-, lead(2+) salt Bismetaboric acid lead(II) salt Bis(metaboric acid)lead(II) salt boranolate, oxo-, lead(2+) salt, monohydrate |
| CAS | 14720-53-7 |
| EINECS | 238-762-3 |
| InChI | InChI=1/2BO2.H2O.Pb/c2*2-1-3;;/h;;1H2;/q2*-1;;+2 |
LEAD (II) BORATE MONOHYDRATE - Physico-chemical Properties
| Molecular Formula | BH3O2Pb |
| Molar Mass | 253.03 |
| Density | 5.598 |
| Melting Point | 160°C -H₂O |
| Appearance | White powder |
| Storage Condition | Room Temprature |
| Physical and Chemical Properties | White crystalline powder. Loss of crystal water at 160 ℃. The relative density of anhydrate is 5.598. Insoluble in water and sodium hydroxide, soluble in dilute nitric acid and acetic acid. It has good dryness and transparency. Poisonous! |
| Use | Used as ink, paint drying agent and used in glass, ceramic manufacturing |
LEAD (II) BORATE MONOHYDRATE - Risk and Safety
| UN IDs | UN2291 |
| Hazard Class | 6.1 |
| Packing Group | III |
LEAD (II) BORATE MONOHYDRATE - Nature
Open Data Verified Data
white crystalline powder. Water of crystallization was lost at 160 °c. The relative density of anhydrate was 598. Insoluble in water and sodium hydroxide, soluble in dilute nitric acid, acetic acid.
Last Update：2025-06-10 22:55:16
LEAD (II) BORATE MONOHYDRATE - Preparation Method
Open Data Verified Data
- Borax method: borax was added with water, heated and dissolved in a dissolution tank, and then the insoluble matter was removed by filtration and diluted to a relative density of 5. 5 Be. The temperature is controlled at about 49 ° C, and the reactor is fed into the reactor, and then the lead acetate solution (prepared from lead oxide and acetic acid) with a relative density of ll0 B6 (75~80 ° C) is gradually added, in the process of feeding to fully stirred, the reaction of lead borate precipitation. After being diluted by adding water, clarified and rinsed three times, the filter was press filtered, and the filter cake was baked at 80 ° C. Until the water content was less than 3%, and crushed to the required fineness to obtain the finished product of lead metaborate.
- boric acid method: the lead oxide was sieved, Diluted nitric acid was added, and stirred to dissolve and react to produce lead nitrate. After filtering and descaling, the filtrate is adjusted to pH 8 by adding ammonia water to generate lead hydroxide precipitate. After the precipitate is washed with water, it is added to the reactor containing boric acid solution, and an appropriate amount of glycerol is added, under stirring, lead hydroxide and boric acid are fully reacted to generate lead metaborate, which is separated by pressure filtration, dried and pulverized to obtain a finished lead metaborate product.
Last Update：2022-01-01 10:58:43
LEAD (II) BORATE MONOHYDRATE - Application
Open Data Verified Data
used in lead glass manufacturing, fire retardant coatings, paint, ink desiccant, welding agent and enamel industry.
Last Update：2025-08-19 16:24:40
LEAD (II) BORATE MONOHYDRATE - Safety
Open Data Verified Data
packed in an iron drum lined with a polyethylene plastic bag. 40 kg net weight per barrel. Should be stored in a cool, dry warehouse. It is prohibited to store and mix with food, medicine and strong acids. Lead metaborate is toxic and has obvious vagus nerve function. Necessary protective equipment should be worn during operation.
Last Update：2025-06-10 22:55:16
LEAD (II) BORATE MONOHYDRATE - Reference Information
| introduction | lead borate is a white crystalline powder, hemiborate loses crystalline moisture at 160°C and melts at 500°C. It is insoluble in water and alkali, but easily soluble in nitric acid and hot acetic acid. It can be used as analytical reagent, paint desiccant, and also used in the manufacture of lead glass and waterproof paint. |
| chemical properties | white crystalline powder. Loss of crystal water at 160 ℃. The relative density of anhydrate is 5.598. Insoluble in water and sodium hydroxide, soluble in dilute nitric acid and acetic acid. It has good dryness and transparency. Poisonous! |
| use | used in lead glass manufacturing, fire retardant coating, paint, ink desiccant, welding agent and enamel industry, etc. used as ink, paint drier and glass and ceramic manufacturing used as analytical reagent, paint desiccant, also used in lead glass and waterproof paint manufacturing | production method | borax method to add water to borax, heat and dissolve in a dissolution tank, filter to remove insoluble matter, dilute to a relative density of 5.5 ° Bé, control the temperature at about 49 ℃, send it to the reactor, and then gradually add a lead acetate solution with a relative density of about 11 ° Bé(75~80 ℃) (prepared from lead oxide and acetic acid), in the feeding process To fully stir, the reaction produces lead metaborate precipitation. After being diluted with water, clarified and rinsed for three times, the filter cake is baked at 80 ℃ until the water content is below 3%, and crushed to the required fineness to produce lead metaborate finished product. Its Pb(Ac)2 + Na2B4O7 · IOH2O → PbO · B2O3 · H2O x 2NaAc +2H3BO3 + 6H2O boric acid method lead oxide is sieved, then dilute nitric acid is added, stirred to dissolve and react to produce lead nitrate. Filter to remove slag, add ammonia water to adjust the pH to 8 to generate lead hydroxide precipitate. After the precipitate is washed with water, it is added to a reactor containing boric acid solution, and an appropriate amount of glycerol is added to make lead hydroxide and boric acid under stirring. Fully react to generate lead metaborate, which is separated by pressure filtration, dried, crushed, and prepared as a finished product of lead metaborate. Its PbO +2HNO3 → Pb(NO3)2 + H2OPb(NO3)2 + 2NH4OH → Pb(OH)2 ↓ +2 NH4NO3Pb(OH)2+2H3BO3 → PbO · B2O3 · H2O + 3H2O |
| EPA chemical information | information provided by: ofmpub.epa.gov (external link) |
Last Update：2024-04-10 22:29:15
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