| Property | Specification |
| Chemical Name | Hexadecyl Trimethyl Ammonium Chloride, Cetrimonium Chloride |
| Molecular Formula | C19H42ClN |
| Molecular Weight | 320.00 g/mol |
| CAS Number | 57-09-0 |
| Appearance | White to off-white powder or flakes |
| Solubility in Water | Soluble |
| pH (1% solution) | 6.0 - 8.0 |
| Active Substance Content (%) | ≥98.0 |
| Melting Point | 150 - 160°C |
| Boiling Point | Decomposes before boiling |
| Flash Point | >100°C |
| Storage Conditions | Store in a cool, dry place away from incompatible materials. |
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What is Hexadecyl Trimethyl Ammonium Chloride and what are its common uses?
Hexadecyl Trimethyl Ammonium Chloride, also known as Cetrimonium Chloride, is a quaternary ammonium compound used widely in the cosmetic industry as a surfactant, antistatic agent, and conditioner. It's commonly found in hair care products, such as shampoos and conditioners, due to its ability to soften and detangle hair. Additionally, it has applications in the pharmaceutical and textile industries.
Is Hexadecyl Trimethyl Ammonium Chloride safe for use in personal care products?
When used within recommended concentrations, Cetrimonium Chloride is considered safe for use in personal care products. Regulatory bodies, including the U.S. Food and Drug Administration (FDA), have approved its use in cosmetics. However, it can cause skin irritation in some individuals, so it's important to perform a patch test if you're using a new product containing this ingredient.
How does Hexadecyl Trimethyl Ammonium Chloride function as a conditioning agent?
As a cationic surfactant, Cetrimonium Chloride adheres to the negatively charged surfaces of hair and skin, reducing static electricity and improving the feel and manageability of the hair. This property makes it an effective conditioning agent, helping to smooth the cuticle layer of the hair, which results in softer, shinier, and more manageable hair.
Can Hexadecyl Trimethyl Ammonium Chloride be used in combination with other ingredients?
Yes, Cetrimonium Chloride is often combined with other surfactants, emollients, and preservatives in formulations. Its compatibility with a wide range of ingredients allows it to be used in various types of products. However, it should not be mixed with strong acids or bases, as this may affect its stability and performance.
What are the environmental concerns associated with Hexadecyl Trimethyl Ammonium Chloride?
While Cetrimonium Chloride is biodegradable, there are concerns about its potential impact on aquatic life. It can be toxic to fish and other aquatic organisms at certain concentrations. Therefore, it's important for manufacturers to follow guidelines for wastewater treatment and disposal to minimize environmental impacts.
