7758-95-4
Lead chloride
CAS: 7758-95-4
Molecular Formula: Cl2Pb
7758-95-4 - Names and Identifiers
| Name | Lead chloride |
| Synonyms | PbCl2 Leclo NA 2291 LT-S9148 Lead chloride leaddichloride plumbouschloride Lead(II) chloride Plumbous chloride leadchloride(pbcl2) Lead chloride (PbCl2) dichloro-lambda~2~-plumbane |
| CAS | 7758-95-4 |
| EINECS | 231-845-5 |
| InChI | InChI=1/2ClH.Pb.4H/h2*1H;;;;;/q;;+2;;;;/p-2/r2ClH.H4Pb/h2*1H;1H4/q;;+2/p-2 |
7758-95-4 - Physico-chemical Properties
| Molecular Formula | Cl2Pb |
| Molar Mass | 278.11 |
| Density | 5.85g/mLat 25°C(lit.) |
| Melting Point | 501°C(lit.) |
| Boling Point | 950°C(lit.) |
| Flash Point | 951°C |
| Water Solubility | Soluble in hot water, alkali hydroxides and NH4Cl solution. Insoluble in cold water and alcohol. |
| Solubility | Easily soluble in ammonium chloride and ammonium nitrate solutions, alkali metal hydroxide solutions. Slightly soluble in water, dilute hydrochloric acid, ammonia. Insoluble in alcohol. Toxic. |
| Vapor Presure | 1 mm Hg ( 547 °C) |
| Appearance | White crystalline powder |
| Specific Gravity | 5.85 |
| Color | White to off-white |
| Exposure Limit | ACGIH: TWA 0.05 mg/m3NIOSH: IDLH 100 mg/m3; TWA 0.050 mg/m3 |
| Solubility Product Constant(Ksp) | pKsp: 4.77 |
| Merck | 14,5404 |
| Storage Condition | Store below +30°C. |
| Stability | Stable. Incompatible with strong oxidizing agents, strong acids. |
| Sensitive | 0: forms stable aqueous solutions |
| MDL | MFCD00011157 |
| Use | Used as a reference reagent, analytical reagent, and flux |
7758-95-4 - Risk and Safety
| Risk Codes | R61 - May cause harm to the unborn child R20/22 - Harmful by inhalation and if swallowed. R33 - Danger of cumulative effects R50/53 - Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment. R62 - Possible risk of impaired fertility |
| Safety Description | S53 - Avoid exposure - obtain special instructions before use. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S60 - This material and its container must be disposed of as hazardous waste. S61 - Avoid release to the environment. Refer to special instructions / safety data sheets. |
| UN IDs | UN 2291 6.1/PG 3 |
| WGK Germany | 3 |
| RTECS | OF9450000 |
| TSCA | Yes |
| HS Code | 28273990 |
| Hazard Class | 6.1 |
| Packing Group | III |
| Toxicity | MLD in guinea pigs (mg/kg): 1500-2000 orally (Tartler) |
7758-95-4 - Reference
| Reference Show more | 1. [IF=6.057] Yudong Gao et al."Electrochemical behavior of amaranth and its sensitive determination based on Pd-doped polyelectrolyte functionalized graphene modified electrode."Talanta. 2017 Jun;168:146 2. [IF=3.361] Jin Zhang et al."Time-dependent and Pb-dependent antagonism and synergism towards Vibrio qinghaiensis sp.-Q67 within heavy metal mixtures."Rsc Adv. 2018 Jul;8(46):26089-26098 |
7758-95-4 - Reference Information
| NIST chemical information | information provided by: webbook.nist.gov (external link) |
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| solubility in water (g/100ml) | grams dissolved per 100ml of water at different temperatures (℃): 0.67g/0 ℃;0.82g/10 ℃;1g/20 ℃;1.2g/30 ℃;1.42g/40 ℃; 1.94g/60 ℃;2.54g/80 ℃;2.88g/90 ℃;3.2g/100 ℃ |
| Use | used as reference reagent, analytical reagent and flux used in the manufacture of Vernal yellow, lead oxychloride, and welding and flux. |
| production method | 1. Pure hydrochloric acid with a relative density of 1.19 is diluted to a concentration of 0.37% with water, heated to boiling, then pure lead carbonate is dissolved therein (to excess hydrochloric acid), the solution is cooled to 0-15OC crystallization, lead dichloride crystals were filtered off by suction, washed with a small amount of ice water, and then dried at 40 oC to obtain a finished product. 2. Dissolve lead acetate trihydrate with hot water to make a solution with a content of about 28%, add industrial lead oxide, heat, boil and stir until dissolved, filter out insoluble matter, pure hydrochloric acid with a relative density of 1.19 (n = 5) was added to carry out the reaction. After the reaction is finished, let stand until the precipitation is complete, separate the solution and crystallization, and wash the crystals to be qualified by Suction filtration and cold water; Add a small amount of lead oxide to the solution and heat it until it is dissolved, the insoluble matter is filtered off, and then the above pure hydrochloric acid is added for reaction, and the crystal is completely allowed to stand still. After Suction filtration, the crystal is washed with cold water until it is qualified, and the crystal obtained before and after the combination is dried at about 30oC to be the finished product. 3.15ml of chemically pure hydrochloric acid (relative density 1.19) was diluted with ml of water and heated to boiling, and 15g of analytical pure lead carbonate was dissolved therein. After the resulting solution was cooled to 0-5 °c, the lead chloride crystals were suction filtered with a Buchner funnel, washed with 5-10ml of ice water, and then dried below 40 °c, to prevent partial hydrolysis of the product to the basic salt. Yield 13G, yield 85%. 4. Dissolve 40g of chemically pure PbAc2 · 3H2O in 80ml of hot water, add 15g of industrial pure PbO, boil until dissolved, and filter. 34ml of chemically pure hydrochloric acid (relative density 1.19) was added to the filtrate, stirred and allowed to stand. The upper layer was clarified and the solution was poured out for use. The PbCl2 precipitate was filtered with suction using a Buchner funnel and washed with 15ml of cold water. To the decanted solution was added 25g of PbO, heated until dissolved and filtered. To the filtrate, 25ml of hydrochloric acid (relative density 1.19) was added to precipitate crystals, which were collected by Suction filtration and washed with 10 to 15ml of cold water. The two crystals obtained were combined and dried at 25-35 °c. Yield 75g, yield 96%. PbCl2 can be refined by sublimation. |
| category | toxic substances |
| toxicity grade | poisoning |
| Acute toxicity | oral-rat LD50: > 1947 mg/kg |
| flammability hazard characteristics | non-combustible; Toxic chloride and lead smoke generated from fire scene |
| storage and transportation characteristics | warehouse low temperature, ventilation, dry |
| extinguishing agent | water, carbon dioxide, dry powder, sand |
| Occupational Standard | TWA 0.10 mg (lead)/m3 |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 21:04:16
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