Latest updates from CHNV
CHNV Technology Co., Ltd. is expanding its calcium-based materials business with four calcium hydroxide grades: GH65, FM100, FM300, and FM700. With different specifications for calcium hydroxide content, whiteness, and fineness, these products offer industrial customers options tailored to their material requirements.
At CHNV, we believe the value of calcium hydroxide goes beyond supplying a basic raw material. It lies in matching material specifications to actual application needs. From active ingredient content and impurity limits to appearance and powder fineness, we provide clearly defined specifications to help customers understand, compare, and evaluate our products.
CHNV calcium hydroxide is produced through a controlled hydration process and supplied as a white powder. Key specifications for each grade are listed below.
| Parameter | GH65 | FM100 | FM300 | FM700 |
|---|---|---|---|---|
| Ca(OH)₂ content | ≥92% | ≥98% | ≥96% | ≥95% |
| Whiteness | ≥92 | ≥96 | ≥95 | Not specified |
| Percentage passing a 325-mesh sieve | ≥99.5% | ≥99.5% | ≥98% | ≥98.5% |
FM100 combines a Ca(OH)₂ content of ≥98%, whiteness of ≥96, and a 325-mesh sieve passing rate of ≥99.5%. These specifications provide a clear basis for evaluation by customers who require a combination of active ingredient content, appearance, and sieve fineness.
The grades do not represent a simple ranking from lower to higher quality. Selection should be based on the intended use, processing conditions, and acceptance criteria to determine which parameters matter most in production.
Calcium hydroxide content is a fundamental selection criterion, but impurity composition also deserves attention.
All four CHNV grades specify MgO at ≤0.5%, SiO₂ at ≤0.03%, and Al₂O₃ at ≤0.02%. The Fe₂O₃ limit is ≤0.01% for GH65, FM100, and FM300, and ≤0.1% for FM700.
By specifying individual impurity limits, we enable customers to assess each parameter against their process requirements, rather than relying solely on general descriptions such as “high purity” or “high whiteness.”
For appearance-sensitive applications, whiteness is one consideration. For applications with specific chemical requirements, both the principal component and relevant impurities need to be evaluated. For customers concerned with powder handling and performance, sieve fineness should be considered alongside results from application trials.
Our aim is to connect each product characteristic with a defined specification and a clear application requirement.