
Calcium beta hydroxy beta methylbutyrate (HMB-Ca, CAS 135236-72-5), with the molecular formula C₁₀H₁₈CaO₆, is a white crystalline powder that is highly soluble in water. It promotes muscle synthesis and reduces muscle loss. It is primarily used in sports nutrition supplements, dietary fortification for middle-aged and elderly individuals, and as a feed additive for livestock and poultry.
| Item | Specification |
| Melting Point | 210–215°C (decomposes) |
| Boiling Point | N/A |
| Vapor pressure | <1×10⁻¹⁰ mmHg at 25°C |
| Calcium content |
14.0–15.5% (anhydrous) 13.0–14.5% (monohydrate) |
| HMB Content |
1.677 (20 °C)77–82% (anhydrous) 72–77% (monohydrate) |
| Solubility | 6.0~9.0 |
| Flash point | N/A |
| Thermal conductivity | 2.887 W/(m·K) |
| Solubility | oluble in water, slightly soluble in ethanol, insoluble in organic solvents such as diethyl ether and chloroform. |
| Stability | Stable; hygroscopic; avoid high temperatures (>200°C), moisture, and strong oxidizing agents. |
A key ingredient in sports nutrition supplements, HMB-Ca is used to build muscle, prevent muscle breakdown, and enhance athletic endurance
A dietary supplement for middle-aged and elderly individuals, designed to prevent muscle loss and maintain muscle function
A feed additive for livestock and poultry, used to promote growth and improve lean meat yield and feed conversion efficiency
A food product for special medical purposes, used to help improve muscle atrophy
A functional food ingredient and pharmaceutical intermediate, used in the development of formulations related to muscle health
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