Overview of Stearic Acid
Stearic acid, which is octadecanoic acid, has the structural formula: CH3(CH2)16COOH, produced by the hydrolysis of oils and fats, and is mainly used to produce stearates. Each gram is dissolved in 21ml ethanol, 5ml benzene, 2ml chloroform or 6ml carbon tetrachloride.
Zinc stearate is a fine white powder in appearance, smooth to the touch, no sandy feeling, and has a fatty odor.
Magnesium stearate is a fine, light white powder in appearance, insoluble in water, ethanol and ether, soluble in hot water and hot ethanol.
The appearance of lithium stearate is white fine powder, which is more soluble in ketones than other stearate.
Specifications of Stearic Acid
| Property | Typical Value |
|---|---|
| Chemical Formula | C₁₈H₃₆O₂ |
| Appearance | White or slightly yellow solid (Stearic Acid), liquid (Derivatives) |
| Purity | ≥95% to 99.5% |
| Melting Point | 69-70°C (for pure Stearic Acid) |
| Boiling Point | 383°C at 760 mmHg |
| Density | 0.9408 g/cm³ at 25°C |
| Solubility in Water | Insoluble |
| pH | 5.0 - 7.5 |
| Storage Conditions | Store in a cool, dry place away from oxidizing agents |
Applications of Stearic Acid
Stearic acid widely used in the manufacture of cosmetics, plastic cold-resistant plasticizers, mold release agents, stabilizers, surfactants, rubber vulcanization accelerators, waterproofing agents, polishing agents, metal soaps, metal mineral flotation agents, softeners, pharmaceuticals and others Organic chemicals.
Zinc stearate is used in the processing of non-toxic PVC products, which can effectively improve the light stability of PVC products.
Magnesium stearate is used in food, medicine, paint, plastic, rubber, textile and other industries.
Lithium stearate can be used in combination with phosphatidic acid plasticizers, and can also be used as external lubricants for nylon, phenolic resin, and rigid PVC. In addition, lithium stearate can be used as waterproof, anti-seepage, etc. in construction.
Company Profile
Luoyang Trunnano Tech Co., Ltd provide different kinds of Stearic acid, such as zinc stearate, magnesium stearate,lithium stearate, calcium stearate, lead stearate, aluminum stearate, cadmium stearate etc. Send us an email or click on the needed products to send an inquiry.
Payment Term:
T/T, Western Union, Paypal, Credit Card, etc.
Shipment Term:
By courier, by air, by sea, as customers request.
Storage conditions:
1. Type 200 stearic acid is packed in cardboard box. Type 800 stearic acid is packed in woven bags lined with plastic bags. Store in a cool and ventilated place.
2. This product can be packed in cardboard box or woven bag lined with plastic bag. The net weight of each box (bag) is 25kg or 50kg.
3. Store in a cool, dry, ventilated place, keep away from fire and oxidants. Store and transport according to general chemical regulations.
5 FAQs of Stearic Acid Series Materials
What are stearic acid series materials used for?
Stearic acid and its derivatives are widely used in cosmetics, soaps, detergents, plastics, rubber, and as lubricants in various industrial processes. They also serve as emulsifiers and stabilizers in food products.
How should stearic acid series materials be stored?
Store them in airtight containers in a cool, dry place. Avoid exposure to moisture and oxidizing agents. Proper storage helps maintain their quality and effectiveness.
Is stearic acid hazardous?
While generally considered safe for use in many applications, stearic acid can cause eye irritation and may be harmful if ingested in large quantities. It's important to handle it with appropriate personal protective equipment (PPE).
Can stearic acid dissolve in water?
No, stearic acid is insoluble in water but soluble in organic solvents like ethanol and acetone. This property makes it useful as an emulsifier in formulations where water and oil need to be mixed.
What are some common derivatives of stearic acid?
Common derivatives include glyceryl stearate, which is used extensively in cosmetic formulations; stearic acid esters, used as plasticizers and lubricants; and sodium stearate, commonly found in soaps and detergents. These derivatives often have improved solubility or functionality compared to pure stearic acid.
