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City: Xi'an city
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CAS NO.9084-06-4
99.9%(1-25)Kilogram99.9%(26-100)Kilogram
| Use | the sodium salt of poly (naphthalene formaldehyde sulfonate) is a brown or dark brown powder. Commonly used in Disperse dyes, reactive dyes, pesticide diffusion agent, filler, leather tanning agent, building cement concrete water reducing agent, used as oil well cement water reducing agent. This product is used as dispersing agent and levelling agent for disperse dyes, reactive dyes and vat dyes. Pesticide dispersant, water-reducing agent for cement concrete. used as pesticide diffusing agent, filler, dye dispersant, leather tanning agent, building water reducing agent used as oil well cement water reducing agent. This product is a diluent for Pulp Pulp control in the paper industry, reducing the two sides, improving the retention rate of fillers or fine fibers, improving sizing and reducing the viscosity of the coating. It is used as a high efficient dispersant for water-based coatings and pigment pastes. It is used as a color paste dispersant in acrylic acid series, aldehyde C Series, chlorine partial series latex paint. It can also be used as an adhesive, filler powder of a polymer and in a sealing layer to improve water resistance. |
| production method | preparation process of this product: sulfonation of acenaphthalene, condensation of sulfonated product with formaldehyde, neutralization and three steps. 550kg of refined naphthalene was put into the reaction vessel, and the temperature was raised to 50 ° C. For 4H. Then, the temperature is lowered and water vapor is passed through, and the by-product of hydrolysis is obtained as 1-Naphthalene sulfonic acid. After completion of the hydrolysis, the material was driven into a polycondensation kettle, and 37% aqueous formaldehyde solution was added to react at a pressure of 196 kPa. Finally, neutralization to pH 8-10 was carried out by addition of alkali. The reaction was completed. Cooling crystallization, filtering out the crude product after drying for the finished product. The preparation process includes three steps: sulfonation of methyl naphthalene, condensation and neutralization of sulfonated product with formaldehyde. 130 of methylnaphthalene was put into a sulfonation kettle, heated and melted, stirred, and heated to 140-° C. For reaction 2. Then, 210L of water was added under rapid stirring, and the acidity was measured by sampling after stirring for half an hour. If the total acidity was 25%-27%, it was qualified. Cool to 90-100 °c. A 37% solution of formaldehyde in water was added in one portion. The reaction temperature is controlled at 130~140 ℃ and the pressure is 0.15~0.20MPa. Reaction 2H allowed for full condensation. After completion of the condensation, 30% alkali solution was added and neutralized to a pH of about 7. Finally, the crystals are cooled, filtered, and the crystals are dried. |
Concrete high sulfate resistance agent
Product Introduction
Concrete high resistance to sulfate attack agent is a special inorganic non-metallic materialwith high resistance to sulfate attack and high permeability. lt is the latest achievement of the nationa"Ninth Five Year Plan" research project and has been preliminarily promoted in engineering with goodresults
Usage method
1. The commonly used dosage of concrete high sulfate resistance agent is 8% -12% of theweight of cement, and it replaces cement in equal quantities during construction.2. The concrete mixed with MDX-6 concrete high sulfate resistance agent should be mechanically mixedand the high sulfate resistance agent and cement should be added to the mixer at the same time, andmixed evenly.
There are no special reguirements far the construction process and grouting process of concretemixed with high sulfate resistance agent, which is the same as the conventional constructionmethod.
Package and Storage
concrete high sulfate resistance agent is packaged in woven bags with plastic film, with eachbag weighing 25 kilograms.
concrete high sulfate resistance agent should be stored in a dry warehouse to avoid moisture.3. The effective storage period of concrete high sulfate resistance agent is two years, and it canonly be used after passing the inspection and passing the expiration date.
| Risk Codes | 36/38 - Irritating to eyes and skin. |
| Safety Description | S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S36 - Wear suitable protective clothing. |
| TSCA | Yes |
| Toxicity | LD50 oral in rat: 3800mg/kg |
CAS:
9084-06-4
MF:
(C11H7O4SNa)n
MW:
0
EINECS:
618-665-6
MDL No.:
MFCD01324675
PH
pH (20g/l, 25℃) : 6.0～9.0
Hydrolytic Sensitivity
0: forms stable aqueous solutions