A bunch of red blossoms

August 26, 2024

A string of red hi warm, more heat-resistant, the optimum temperature is 20 °C -25 °C, below 15 °C leaves yellow, fall off, below 10 °C frozen, and can lead to death, can be open winter in the Lingnan region, Central China can be Winter in the greenhouse. Properly cultivated in South China, it can be flowered in four seasons, and takes the following measures year after year to reach people's expected flowering period. The birth period of a string of red flowers in southern China is about 100 days. To make it blossom in the “5.1” season, it is sown in early January; a string of red seeds sown in May and May can bloom around the Spring Festival. Sowing cultivation of a string of red should be carried out for the first time in 2 to 4 pairs of true leaves, and repeated 2 times -3 times to cultivate a plump plant shape. Pruning measures generally stop the trimming one month before flowering, but in order to postpone the flowering period, it can delay the flowering period from 15 days to 30 days during the budding period. The timely removal of stumps and the appropriate application of fertilizers can improve the ornamental effect and extend the flowering period. Fertilizer management before flower control and N control delay flowering. Cutting propagation A string of red cuttings breeding can easily survive, with ordinary sand bed, appropriate shade, keep the temperature above 80%, the temperature above 20 °C, 15 days to 20 days can take root, the survival rate is extremely high. For the flowering period, branches and shoots are taken from the mother branches that have completed the growth period. After one month, they can bloom, but the plant shape is small. Precautions 1. A string of reds is extremely resistant to drought, and the dry soil in the soil shows a wilting effect, which affects the ornamental value. Therefore, it is necessary to pour enough water and water twice a day in summer. 2. Various measures must be combined with the management of fertilizer and water. China Agricultural Network Editor

Epichlorohydrin (ECH)

Epichlorohydrin, 3-Chloro-1, 2 - epoxypropene, chloropropylene oxide ,ECH .

Molecular Formula: CH2OCHCH2Cl, C3H5OCl

Properties: It is a volatile, unstable colorless liquid with irritating odor similar to chloroform and ether. Molecular weight is 92.85, density, 1.1806g/cm3, boiling point, 116.11°C, freezing point, -57.2°C, refractive index (nd20), 1.4382, flash point (open cup), 40.6°C, and ignition point, 415°C. It is slightly soluble in water, miscible with many organic solvents, and able to generate azeotrope with a variety of organic liquids.

Main Applications:
Epichlorohydrin is an important organic industrial chemical and a chlorine-consuming product in fine chemicals, mainly for producing epoxy resin, synthetic glycerin, epichlorohydrin rubber, nitroglycerine explosives, glass fiber reinforced plastics, and electrical insulation products, which are widely used in the chemical industry, light industry, transportation, medicine, electronics and other fields. It also can be used as solvent for cellulose ester, resin, and cellulose ether, and the raw material of plasticizer, stabilizer, surfactant, and chloroprene rubber.

Toxicity and Protection: It is highly toxic, absorbed through the skin, and irritating to skin and mucous membranes. In higher concentrations, it has the function of narcotism. When poisoning occurs, there will be eye irritation, conjunctivitis, rhinitis, lacrimation, cough, fatigue, gastrointestinal disorders, nausea and other symptoms. Serious poisoning may lead to anesthesia or even lung, liver or kidney damages. Lethal concentration of human beings is 20ppm. Lethal dose of rat is 5090mg/kg. The maximum allowable concentration in air is 5ppm (18mg/m3). Production equipment needs to be closed, air, circulating, and the operator, wear protective equipment. In addition, due to intense auto polymerization, epichlorohydrin can not be heated in the fire in case of container burst. As for reaction as reagent, it is appropriate to be diluted with inert solvent and slowly added.

Packaging, Storage and Transport:
As ferric chloride or stannic chloride can promote auto polymerization, epichlorohydrin should be stored in dry, clean iron barrel, 200kg each, and kept in a cool, ventilated, and dry place, away from fire and heat. Store and transport in accordance with the provisions of flammable toxic substances.

EPICHLOROHYDRIN SPECIFICATION DATA SHEET

ITEMS

GUARANTEED SPEC

PURITY% (m/m)≥

99.9

DENSITY g/cm3

1.180-1.183

COLOR(pt-co)≤

10

MOISTURE%(m/m)≤

0.05


Epichlorohydrin

Epichlorohydrin (Ech),Epichlorohydrin 106-89-8,99.9% Epichlorohydrin,High Quality Epichlorohydrin

Shandong Tiancheng Chemical Co., Ltd. , https://www.tianchengchemical.com