LEAD MONOSILICATE
LEAD MONOSILICATE
CAS: 10099-76-0
Molecular Formula: O3PbSi
LEAD MONOSILICATE - Names and Identifiers
| Name | LEAD MONOSILICATE |
| Synonyms | Alamosite LEAD MONOSILICATE Lead silicon oxide Basic lead silicate C.I.Pigment White 16 Lead silicon trioxide |
| CAS | 10099-76-0 |
| EINECS | 233-246-4 |
LEAD MONOSILICATE - Physico-chemical Properties
| Molecular Formula | O3PbSi |
| Molar Mass | 283.28 |
| Density | 6,5 g/cm3 |
| Melting Point | 680-730°C |
| Water Solubility | insoluble H2O, os [CRC10] |
| Appearance | white monoclinic crystalline powder |
| Specific Gravity | 6.5 |
| Sensitive | 1: no significant reaction with aqueous systems |
| Refractive Index | 2.01 |
| Physical and Chemical Properties | Pale yellow to golden yellow heavy glass grains. Relative density 6.2. The softening point is 750 ℃. Insoluble in water and ethanol. Slightly soluble in strong acid. Stable chemical properties, amorphous crystal. Poisonous! |
LEAD MONOSILICATE - Risk and Safety
| Risk Codes | 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. R61 - May cause harm to the unborn child R62 - Possible risk of impaired fertility |
| Safety Description | S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) S53 - Avoid exposure - obtain special instructions before use. |
| UN IDs | 2291 |
| TSCA | Yes |
LEAD MONOSILICATE - References
| EPA chemical substance information | information provided by: ofmpeb.epa.gov (external link) |
| toxicity | lead and lead compounds harm almost all organs of the human body. Such as the nervous system, blood system, metabolism and endocrine system, digestive system, cardiovascular system, etc. The early symptoms of lead poisoning are the appearance of lead wire on the edge of the gums (there may be no lead wire when the poisoning is obvious), and the so-called "lead color"-the skin is earth-colored. In case of lead poisoning, if colic occurs when subcutaneous injection of atropine and other drugs. Wash hot water bath, warm abdomen, enema, etc., as well as diathermy and other emergency treatment. The maximum allowable concentration of dust or vapor is 0.01mg/m3. Masks can block 95% ~ 97% lead dust. When the vapor concentration is high, a filter type gas mask or a hose type gas mask can be used to force the supply of fresh oxygen. Eating is prohibited during working hours in the workplace. Rinse your mouth and brush your teeth before and after meals. You must take a shower after work. Technical procedure requirements shall be strictly observed during the operation of lead and lead-containing substances. Wet substances that are prone to dust. |
| Use | anti-rust pigment. The polymer can be added as a wear-resistant material. It can be used as a thermal stabilizer for polymers, and is also used in the manufacture of optical glass, picture tubes, optical fibers, household containers, and for low melting point welding. |
| production method | lead oxide and silica sand are melted, cooled, crushed and sieved at high temperature to obtain lead silicate. dry method. Reaction equation: 3PbO 2SiO2 → 3PbO · 2SiO2 operation method: the powder of lead oxide (PbO) and silicon dioxide (SiO2) is mixed uniformly at a mass ratio of 85:15, calcined and melted at 950 ° C, water was then added for rapid cooling, wet milling, filtration, and drying to obtain 3-4 μm of pigment. |
| category | toxic substances |
| toxicity grade | poisoning |
| flammability hazard characteristics | non-combustible; High thermal decomposition toxic lead smoke |
| storage and transportation characteristics | warehouse ventilation and low-temperature drying; Separate from food storage and transportation |
| extinguishing agent | water, sand |
| Occupational Standard | TLV-TWA 0.15 mg (lead)/m3 |
Last Update：2024-04-10 22:29:15
