Which type of glass clarifying agent is most commonly used?

We are a manufacturer of glass clarifying agents, welcome to inquire!

In glass manufacturing, sodium pyroantimonate and cerium oxide are the two most commonly used clarifying agents, but their application scenarios and advantages each have their own focus.

1. Sodium pyroantimonate: the "king of cost-effectiveness" for photovoltaic glass

   
   

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Core advantages:

Low temperature and high efficiency: Low decomposition temperature, no need for high-temperature melting, significant energy saving.

Cost controllable: accounting for about 6% of the cost of photovoltaic glass, with outstanding economic efficiency.

Environmental safety: Low toxicity, compliant with RoHS and REACH standards.

Typical applications: Photovoltaic glass, vessel glass, etc., especially suitable for cost sensitive large-scale production.

2. Cerium oxide: the "performance responsibility" of high-end optical glass

Core advantages:

High temperature stability: high decomposition temperature (above 1300 ℃), suitable for high-temperature melting.

Multifunctional: It has the functions of clarification, melting aid, and refractive index adjustment.

Environmental friendliness: non-toxic, in line with environmental requirements.

Typical applications: Optical glass, electronic glass, and other fields that require extremely high transparency.

3. Other clarifying agents: supplementary options for specific scenarios

White arsenic (arsenic trioxide): has excellent clarification effect, but is highly toxic and requires strict management.

Antimony oxide: Low toxicity, commonly used in lead glass, needs to be used in combination with nitrate.

Composite clarifying agent: such as arsenic free composite clarifying agent, it is environmentally friendly and safe, and is a development trend in the industry.

4. Suggestions for selection

Photovoltaic glass: Priority should be given to selecting sodium antimonate, balancing cost and performance.

Optical/electronic glass: Cerium oxide is more suitable to ensure high transparency.

High environmental requirements: composite clarifying agents, such as arsenic free type, can be considered.

If you have specific glass types or production conditions, I can help you further refine the recommendations!