Complaint
Yellow Lead is a kind of yellow or yellowish brown powder, its specific density is 9.53 g/cm3, melting point is 888°C, boiling point is 1470°C. Heated to 300-500°C, changes into Red 1ead; With the temperature going on, changes into Yellow Lead again. It doesn't dissolve in water and alcohol, but dissolves in glacial acetic acid easily; it is poisonous while dissolving in nitric ac1d.
We are the Chinese premier manufacturer and supplier of quality, gold free flux and litharge. Our quality system guarantees the levels of gold in the fire assay flux are less than 1-1.5ppb in the litharge component of the flux, making it ideal for low level assay work.
The raw materials are certified for the use of fire test flow, the main ones are litharge or lead oxide with SGS certified amounts of gold <1 ppb and Silver<1 ppm. In addition is used Borax anhydrous, sodium carbonate, silicon oxide, fluorite, and other elements to order of each customer.
For each batch that is made for a given customer, a counter sample is left, which is kept for three months.
Technical specification for core material litharge with SGS report
Au< 1PPB Ag<0.5PPM
| Component | Standard |
| Litharge | Purity:99.9% Ag≤0.2ppm Au≤2ppm |
| Soda Ash Den | NaCO3≥99.2% |
| Borax | B203%: 68.5-69.4 Equivalent Na2B07%:99.0-100.3 Na20%: 30.5-30.9 H20 % ≤1.0 SO4 ppm≤150 Fe ppm≤40 |
| Silica | 200mesh SiO2≥99.5% |
| Silver Nitrate | AR grade |
Package with 25kgs woven bags or plastic drums, or as your request.
High level of Quality Control at each stage of production
Packaged to your requirement
Prompt international shipping
Consultation available as needed
Counter samples kept 3 months
Welcome to contact us for quotation!
Name: Selina Xu
