Features and uses
Sodium dicyclohexyl sulfosuccinate (HANTAICHEM ® DNS- 196) is an anionic surfactant
Agent, with good emulsification, dispersion and other properties; also has excellent resistance to high concentrations of electrolyte
Of which the formula is C16H29O7NaS, a molecular weight of 388.45. HANTAICHEM ® DNS-196 resistant calcium stability
Of the CMC value is higher, with other succinic acid ester compatibility is better. Its structure, excellent
The root of the branch is attached to -SO3Na, because its hydrophilic base is in the middle of the oleophilic base, so it is moist
But because of its two cycloalkyl groups steric hindrance effect, reduced the hydrophilic-based groups
The advantages of play (see below).
High CMC value plus a unique surface active characteristics, so that it can be used as a supplement after the use,
Without affecting the surface tension of the entire system.For the synthesis of emulsion after the addition of stabilizers, with excellent activity
Different low foaming properties, can produce a dispersion with antistatic stability; and after the latex film, the film
Smooth and smooth, which is extremely important for paper coating with styrene-butadiene latex. Of course,
Benzene latex synthesis will also show excellent advantages: If you can provide excellent resistance to water-based and adhesion,
To produce a high surface tension of the emulsion with good mechanical stability and bearing capacity, and to make the emulsion widely used
The sensitivity to water is reduced, so it is often used as a supplement to the production of carboxybutylbenzene emulsions.
Molecular structure diagram HANTAICHEM ® DNS-196
Physical and chemical properties
Appearance (25 ° C) white solid
Active content (% by weight) 90-96
Solid content (wt%) ≥98
PH (1% aqueous solution) 5-7
Specific gravity (25 ° C, g / cm 3) 1.06 to 1.10
Flash point (° C)> 93
Acid value 2.5
Iodine value of 0.5
Critical micelle concentration (CMC) (wt%) 2.3-2.5
Solubility
In a polar solvent, it can be dissolved by heating
In a non-polar solvent, it can be dissolved by heating
Mediumly soluble in water (about 10 g / ml, 25 ° C)
stability
2% solution of HANTAICHEM ® DNS-196, at 25 ℃, adjusted PH = 4.5-10.1,10 surface with a dilute aqueous ammonia days
Tension does not change.
Foaming
Improved ROSS-MILES Foam Test method (GB / T7462-94), HANTAICHEM ® DNS-196 foam height ml (0.5%, 25 ℃)
At the beginning: 10
After 15 minutes: 0
Surface Tension
HANTAICHEM ® DNS-196 surface Zhang Li test at 25 deg.] C and the aqueous solution of the measured results are as follows:
Concentration (wt%) 2.10 2.20 2.30 2.40 2.50 2.60 2.70 2.80 2.90 3.0
Surface tension (25 ° C) 51.4 49.4 48.5 42.1 44.6 43.9 43.7 44.0 45.0 47.5
Calcium tolerance
ppm.CaCO 3, 0.5% greater than 2200
Bodegradation and environmental protection
HANTAICHEM ® DNS-196 is not listed as hazardous substances to the environment. This product is completely biodegradable in a
During the test cycle (28 days), the product can be biodegraded by 70%.
Health and safety
Although the product has a pungent odor, under normal industrial operating conditions, low dose HANTAICHEM ® DNS-196 surface
The active agent does not pose a risk to the human body, but should avoid excessive exposure to skin and eyes.
Storage and operation
Local HANTAICHEM ® DNS-196 will be stored in a cool, well-ventilated. Dubbed solution HANTAICHEM ® DNS-196
Should be stored above 15 ℃, to prevent crystallization; not used when the container closed.
Calcium plastic material (PP, PE, etc.), enamel, stainless steel and other containers made of materials, are suitable HANTAICHEM ®
DNS-196 storage and processing. Under normal circumstances, the product can be stored for one year.