化工3-Chemistrytrading

Safety is an important issue for frontline workers like physicians, nurses and other health care professionals, who face the greatest risk of infectious disease. In addition, infected health care workers can be a source of disease transmission to patients, family members, and other staff. This is why  personal protective equipment  is especially important for physicians and nurses. What is Personal Protective Equipment? Personal protective equipment (PPE) is clothing or equipment specifically designed to protect nurses from potentially infectious diseases. It creates a protective barrier between the individual and a contaminated object or body. It also prevents direct contact with blood or body fluids. Common PPE equipment includes:  isolation gown ,  protective gowns ,  gloves ,  face masks , etc. The Importance of PPE For Nurses A study published in the Journal of Medicine showed that nurses spend about one-third of their time in direct patient care, compared to 14 percent spent by p

  Redispersible latex powder products are water-soluble redispersible powders, which are divided into ethylene/vinyl acetate copolymers,  vinyl acetate/tertiary ethylene carbonate copolymers , acrylic copolymers, etc. agent, with polyvinyl alcohol as protective colloid. This powder can be quickly redispersed into an emulsion after contacting with water. Due to the high binding ability and unique properties of redispersible polymer powders, such as: water resistance, construction and heat insulation, etc., their The range of applications is extremely broad. It has outstanding bonding strength, improves the flexibility of the mortar and has a longer opening time, endows the mortar with excellent alkali resistance, and improves the adhesiveness, flexural strength, water resistance, plasticity and wear resistance of the mortar. In addition to the construction property, it has stronger flexibility in the flexible anti-crack mortar. Dry-mix formulations are essential for transporting and kee

  1-Chlorobutane Basic Informations： Product Name:   1-Chlorobutane Synonyms: 1-Chlorobutane Butyl chloride 109-69-3 N-BUTYL CHLORIDE Butane, 1-chloro-   CAS:  109-69-3 Molecular Formula:  CH 3 (CH 2 ) 3 Cl Molecular Weight:  92.57 Molecular Structure:     1-Chlorobutane Property: Density 0.89 g/mL Color Colorless Melting Point −123.1 °C Boiling Point 78 °C Flash Point −12 °C   1-Chlorobutane Specifications: Appearance Colorless liquid Purity (%) ≥99 Water content (%) ≤0.1   1-Chlorobutane Applications: Used as intermediates for pharmaceutical, agrochemical and water treatment chemicals.   1-Chlorobutane Package: This product is packed in 200litre drums. The net weight of each drum is 170 kg/drum.     1-Chlorobutane Storage Ways: Keep containers tightly closed in a dry, cool and well-ventilated place. Keep away from heat/sparks/open flames/ hot surfaces. Store away from incompatible materials and foodstuff containers.   What are the Hazards of 1 Chlorobutane? The substance is irritatin

Xenon is a rare , odorless, colourless, tasteless, chemically unreactive gas. It was regarded as completely inert until, in 1962, Neil Bartlett reported synthesis of xenon haxafluoroplatinate. In a gas filled tube xenon emits blue light when excited by electrical discharge. Applications Xenon has relatively little commercial use. It is used in photographic flash lamps, stroboscopic lamps, high-intensitive arc-lamps for motion picture projection and high-pressure arc lamps to product ultraviolet light (solar simulators). Other uses are as general anaesthetic, xenon 'blue' headlights and fog lights are used on some vehicles and are said to be less tiring on the eyes. They illuminate road signs and markings better than conventional lights. Xenon in the environment Xenon is a trace gas in the Earth's atmosphere, occurring in 1 part in 20 million. The only commercial source of xenon is from industrial liquid-air plants. World production is less than 1 tonne per year, although re

With the continuous improvement of people's living standards, health issues have been paid more and more attention.  As a  Rubber Stopper  Manufacturer , share with you. The demand for various pharmaceutical products continues to increase, and the requirements for rubber stoppers for medical products are getting higher and higher. In order to prolong the effective storage period of medicines, it is required to achieve better sealing. In order to be suitable for the packaging of various new drugs, higher chemical resistance is required, so the drug plugs with natural rubber as the main raw material are far from meeting the requirements, while IIR and halogenated butyl rubber (XIIR) are the smallest Pollution, low air and water permeability, steam and atmospheric aging resistance, chemical resistance, puncture resistance, sealing, safety, etc. far exceed other  types of rubber . If it is to be used in oil-type pharmaceutical medium, neoprene (CR) and NBR can be selected to meet its p

  Spherical Lenses   Spherical lenses  - also sometimes referred to as singlets - are optical lenses that feature a spherical surface with a radius of curvature that is consistent across the entire lens. They are constructed such that the light entering them diverges or converges, depending on the lens design. Concave spherical lenses have a negative focal length that causes incident light to diverge (creating a virtual image). In contrast, convex spherical lenses have a positive focal length that causes incident light to converge (creating real and virtual images). The real images formed are highly focused, while the virtual images formed are highly magnified. The main advantages of using spherical lenses in optical systems are their simpler surface design and lower manufacturing cost. These benefits make them suitable for various imaging applications in a diverse set of markets. Plano-convex lenses are often used in light collimation and monochromatic illumination operations that req

  In common with most commercial nitrogen fertilizers, urea is manufactured from anhydrous ammonia (NH3). The high analysis of urea — 46% N — is the main reason for the low cost of this form of nitrogen fertilizer. Freight costs and storage and handling are all lower than with lower analysis fertilizers such as ammonium nitrate (34-0-0) or ammonium sulfate (21-0-0). Urea 46% Nitrogen a white crystalline solid containing 46% nitrogen, is widely used in the agricultural industry as an animal feed additive and fertilizer.  Fertilizer urea   can be purchased as prills or as a granulated material. In the past, it was usually produced by dropping liquid urea from a  “ prilling tower ”  while drying the product. The prilled formed a smaller and softer substance than other materials commonly used in fertilizer blends. Today, though, considerable urea is manufactured as granules. Granules are larger, harder, and more resistant to moisture. As a result, granulated urea has become a more suitable

Borated polyethylene sheet   is a highly effective anti-neutron shielding material with good catalytic activity, low corrosivity to equipment and no environmental pollution. In the medical industry, borated polyethylene is frequently employed as a neutron shield. This material offers great endurance over a wide temperature range and is made of high-density polyethylene plastic with 5% boron content by weight. What Are The Uses Of Borated Polyethylene? Borated polyethylene  is simple to work with, produce, and install, making it perfect for a variety of shielding applications, including high-intensity x-ray rooms, medical vaults, particle accelerators, hot cells, and more. The macroscopic cross section for thermal neutrons in boron is extremely high. As a result, the material has a very high thermal neutron attenuation factor. As a result, it offers great protection against thermal neutrons. With 1% to 30% boron by weight and a high hydrogen concentration, borated polyethylene is a prod

    CATL holds 34.8% of global  power battery  market share in H1.   The global electric vehicle battery installed base in the first half of this year was 203.4 GWh, with Chinese power battery giant CATL contributing 70.9 GWh, according to a report released by South Korean market research firm SNE Research.   This gave CATL 34.8 percent of the global power battery market in the first half, up 6.2 percentage points from 28.6 percent in the same period last year.   South Korea’s LG Energy Solution ranked second with a 14.4 percent share, down from 23.8 percent in the year-ago period, according to SNE Research.   China’s BYD ranked third with an 11.8 percent share, up 5 percentage points from 6.8 percent a year ago.   Japan’s Panasonic ranked fourth with a 9.6 percent share, down from 15 percent a year ago.   South Korea’s SK On and Samsung SDI ranked fifth and sixth with 6.5 percent and 4.9 percent shares, respectively.   From seventh to tenth place are Chinese companies, including CALB

What is hydrogen sulfide? Hydrogen sulfide (H2S)  is a colorless gas with the odor of rotten eggs. The most common sources of H2S emissions are oil and natural gas extraction and processing, and natural emissions from geothermal fields. It is also formed during bacterial decomposition of human and animal wastes, and is present in emissions from sewage treatment facilities and landfills. Industrial sources include petrochemical plants, coke oven plants, and kraft paper mills. Why does  TYHJ  focus on hydrogen sulfide? The odor of H2S is extremely strong and foul, and it can induce tearing of the eyes and symptoms related to overstimulation of the sense of smell, including headache, nausea, or vomiting. The odor of H2S is detectable at a very low level. On a population basis, the average odor detection threshold is about 0.03 to 0.05 ppm, although some individuals can detect H2S at lower concentrations. Additional health effects have only been reported with exposures greater than 50 ppm