Sodium Sulfite Anhydrous CAS 7757-83-7

The preparation of an acid fabric color making up anhydrous salt sulfite as well as polydimethylsiloxane diquaternary ammonium salt comes from the technical field of fabric dyes. The acid fabric color consists of the following components in parts by weight: 15-30 parts of acid color, 5-10 parts of anhydrous salt sulfite, 4-8 parts of sodium dihydrogen phosphate, 2-5 parts of sodium laurate sarcosinate, 3-11 parts of polyvinyl alcohol, 1-5 parts of wetting agent, 8-13 parts of polydimethylsiloxane diquaternary ammonium salt, 3-9 parts of polymethylcyclotetrasiloxane, 2-9 parts of sodium fatty acid, 1-6 parts of acetic acid.

The invention makes sure the dyeing capacity of all-natural dyes on textiles, the dyed textiles have consistent color, and also have excellent soaping fastness, light fastness as well as anti-bacterial efficiency.

Prep work of a monocyclic aromatic hydrocarbon kind superplasticizer. This single-ring aromatic hydrocarbon kind superplasticizer utilizes anhydrous sodium sulfite, salt sulfamate, acetophenone, bisphenol An and also formaldehyde monomers as the major raw materials.

First, making use of the salt hydroxide generated by partial anhydrous salt sulfite hydrolysis as a driver, under alkaline problems, acetophenone and also part of formaldehyde undertake condensation reaction as well as respond with composite sulfonating agent (sulfamate+anhydrous salt sulfite hydrolyzate), the amino group as well as the sulfonic acid team are presented right into the benzene ring to form the sulfonated formaldehyde-acetophenone condensation item intermediate.

After that, under alkaline problems, bisphenol An and also an additional part of formaldehyde go through a methylation response and condense into a bisphenol A-formaldehyde intermediate, while the hydrolyzate of the staying anhydrous salt sulfite and formaldehyde are added to the bisphenol A-formaldehyde phenolic intermediate In vivo intro of sulfonate. Finally, the sulfonated formaldehyde-acetophenone condensation intermediate as well as the sulfonated bisphenol A-formaldehyde intermediate go through polycondensation reaction to manufacture a single-ring fragrant hydrocarbon kind superplasticizer.

Prep work of a dispersing-stabilizer making use of papermaking sludge, consisting of straight including NaOH remedy dropwise to the unattended resources, including anhydrous sodium sulfite to react for 1.5 ~ 2h when the temperature level is 90 ° C; then including hydrogen peroxide, formaldehyde option and also no Salt water sulfite reaction; ultimately including monochloroacetic acid as well as stirring for 2 ~ 3h to get a dispersing-stabilizer containing salt lignosulfonate-sodium carboxymethyl cellulose. The gotten item has great dispersion security, can be utilized in coal-water slurry to make its focus reach 67%, the thickness is listed below 1100mPa · s, there is no difficult rainfall after being placed for 72h, as well as the fluidity is good.

The development has easy procedure as well as light reaction problems, understands the reuse of waste, as well as can be used in industries such as coal-water slurry preparation, oil field, cement processing and so on.

Preparation of foamed phenolic resin, specifically the synthesis of a high-performance non-dehydration foamed phenolic resin. Initial use paraformaldehyde and phenol as basic materials as well as execute polycondensation response with anhydrous sodium sulfite as a stimulant, where: the weight ratio of paraformaldehyde and phenol is 0.38 ~ 0.64:1, as well as the weight proportion of anhydrous salt sulfite and phenol is 0.03 ~ 0.08: 1, the weight ratio of water as well as phenol is 0.06 ～ 0.12:1; Then utilize the water of p-toluenesulfonic acid and ethylene glycol or diethylene glycol or triethylene glycol or polyethylene glycol solution and counteract the item of above-mentioned polycondensation reaction, in the neutralizer: the weight proportion of p-toluenesulfonic acid and phenol is 0.03 ~ 0.05:1, and the weight ratio of ethylene glycol or diethylene glycol or triethylene glycol or polyethylene glycol and also phenol is 0.04 ~ 0.12: 1. The weight proportion of water to phenol is 0.015 ~ 0.022:1.

The creation gets rid of the dehydration process in the synthetic manufacturing procedure, has no waste water discharge in the entire manufacturing procedure, is environmentally friendly, conserves energy, as well as has high product efficiency, as well as appropriates for the production of top notch phenolic foam.