
Polyquaternium 7 (MF: (C8H16ClN)n. (C3H5NO)m, MW: 232.75) is a cationic copolymer. It appears as a colorless to pale yellow, transparent, viscous liquid with no noticeable pungent odor. It has a high charge density and maintains excellent stability across a wide pH range. This characteristic makes it an ideal product for dry and wet chemical hair treatments and for use in human hair and skin care.
| Item | Specification |
| Melting Point | N/A |
| Boiling Point | N/A |
| Density | ~1.02–1.08 g/cm³ (10% aqueous solution) |
| Viscosity | 5000–20000 mPa·s at 25°C |
| Flash Point | >100°C |
| PH | pH 6.0–8.0 in a 5% aqueous solution; stable at neutral to slightly alkaline pH |
| Solubility | Easily soluble in water; can be diluted in any proportion; insoluble in organic solvents such as ethanol and diethyl ether. |
| Stability | Good hydrolytic stability; resistant to pH changes; excellent compatibility with anionic, nonionic, and cationic surfactants. |
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