3-[(2-AMINOETHYL)AMINO]PROPANESULFONIC ACID
3-[(2-AMINOETHYL)AMINO]PROPANESULFONIC ACID
CAS: 14235-54-2
Molecular Formula: C5H14N2O3S
3-[(2-AMINOETHYL)AMINO]PROPANESULFONIC ACID - Names and Identifiers
3-[(2-AMINOETHYL)AMINO]PROPANESULFONIC ACID - Physico-chemical Properties
| Molecular Formula | C5H14N2O3S |
| Molar Mass | 182.24 |
| Density | 1.282±0.06 g/cm3(Predicted) |
| Melting Point | 215 °C |
| pKa | 1.45±0.50(Predicted) |
| Storage Condition | Room Temprature |
| Refractive Index | 1.514 |
3-[(2-AMINOETHYL)AMINO]PROPANESULFONIC ACID - Nature
Open Data Verified Data
expandable polystyrene is a white or colorless transparent bead with a certain particle size, and the relative density is 1. 05~1.06. Can be any coloring, good chemical properties. Expandable polystyrene containing low boiling point hydrocarbon foaming agent, when heated to 90~110 ℃, the volume can be increased by 5~50 times, with thermal insulation, sound insulation, shock resistance, water resistance, acid resistance, alkali resistance and other characteristics of foam plastics. The properties of polystyrene foam plastics are closely related to the structure of micropores, and are related to modifiers and additives. If the flame retardant hexabromocyclododecane is added, the foam has flame retardant properties.
Last Update：2024-01-02 23:10:35
3-[(2-AMINOETHYL)AMINO]PROPANESULFONIC ACID - Preparation Method
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The preparation method of the expandable polystyrene is mainly in the bead resin prepared by the suspension method, and a certain amount of foaming agent (low boiling point hydrocarbon) is filled. There are three kinds of production processes.
- impregnation method styrene monomer is injected into a polymerization kettle with water as a medium, and benzoyl peroxide (initiator) and Hydroxyethyl Cellulose (dispersant) are added, the polymerization was carried out at 85-90 °c with stirring. When the degree of polymerization is above 85%, the foaming agent is added, and then the polymerization is continued to the end. After washing and drying, the expandable polystyrene product is obtained. The reaction scheme is the same as that of general-purpose grade polystyrene, but the blowing agent should be charged.
- impregnation method styrene was first subjected to suspension polymerization to obtain beads of a certain particle size, and then classified and sieved. After adding water, dispersant, emulsifier and foaming agent to the uniform bead resin by suspension polymerization, the resin is heated and impregnated in a reaction kettle to obtain the desired product. The energy consumption of this method is slightly greater than that of the one-step method, but no powder is produced. The reaction formula is the same as that of general grade polystyrene, but the foaming agent is required.
- seed polymerization method using a certain particle size of polystyrene, polyethylene, polyvinyl chloride or Polyphenylene ether and other resin powder or beads as seeds suspended in the polymerization medium, the initiator-containing styrene was then added dropwise to the reaction vessel for polymerization. When the polymerization reaction enters the late stage, the foaming agent is added, and the product with uniform particle size can be obtained. With different seeds, expandable polystyrene products with different properties can be produced. If polyethylene is used as seed, the product has good impact and oil resistance. When polyvinyl chloride is used as seed, the expandable polystyrene has flame retardancy.
Last Update：2022-01-01 11:07:47
3-[(2-AMINOETHYL)AMINO]PROPANESULFONIC ACID - Use
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expandable polystyrene is mainly through different foaming process, made of different relative density and different shape of the products. The pre-foamed body can be used as an auxiliary material for domestic water filtration media and lightweight concrete. The molded foamed product can be used as a shock-proof packaging material, an insulating material, a floating material, a heat-insulating material, a sound-insulating material, and the like, and the foamed polystyrene used for television packaging alone is more than 15,000 tons/year. The foam sheet can be used as a packaging container, in particular for disposable tableware. Different density of the product, its use is also different, the density of 0. 016~0.032g/cm3 of the material, the amount of 65% of the expanded polystyrene, mainly used as packaging materials and thermal insulation materials; Density of 0. The material of 08~0.32g/cm3 is a foam sheet, which is commonly used as a food container; The density is 0.4~0. 8g/cm3 material, is used to make furniture, appliances and automotive products. The properties and uses of different types of expanded polystyrene are also different.
Last Update：2022-01-01 11:07:48
3-[(2-AMINOETHYL)AMINO]PROPANESULFONIC ACID - Safety
Open Data Verified Data
The product must be packed in woven bags with a net weight of 25kg. Storage should pay attention to heat insulation, the warehouse should be kept dry, clean, mixed with any impurities in the product is strictly prohibited, sun and rain are strictly prohibited. During transportation, the product should be stored in a clean and dry car or cabin with a ceiling, without sharp objects such as nails. It is strictly prohibited to mix with flammable aromatic hydrocarbons, halogenated hydrocarbons and other organic solvents.
Last Update：2022-01-01 11:07:49
3-[(2-AMINOETHYL)AMINO]PROPANESULFONIC ACID - Molding Process
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- The molding method of the expandable polystyrene is mainly a molding method. During molding, the expandable polystyrene beads were pre-foamed at 90~105 ℃, and then placed for a certain period of time, which increased with the increase of foaming ratio. The cured particles are then filled in a certain shape of the mold cavity, which can be compressed and heated to reexpand and melt bond into a whole, and the foam products of different shapes are processed by cooling and setting.
- by continuous extrusion foaming of the expandable polystyrene together with the nucleating agent, a flexible, light-weight and glossy foam sheet can be produced.
Last Update：2022-01-01 11:07:48
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