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Determination of trace water in ethylene and propylene for industrial use (3)

 Time of Update: 2022-01-17

1. 2 Pressure adjustment of gaseous samples: Connect the hygrometer and the sample cylinder or sampling pipeline with a stainless steel tube .
Determination of trace water in ethylene and propylene for industrial use (1)

 Time of Update: 2022-01-17

1 This standard specifies the Karl Fischer coulometric method and hygrometer method for the determination of trace water in ethylene and propylene .
Determination of trace water in ethylene and propylene for industrial use (2)

 Time of Update: 2022-01-17

2 Express the water content (c 2 ) in the sample by volume concentration (mL/m³ ), and calculate according to formula (2): Where:M—The relative molecular mass of ethylene or propylene (28.
[Plastic] Brazil postpones the implementation of the Food Contact Plastic Material Regulation RDC Resolution No. 326/2019

 Time of Update: 2022-01-15

Food contact plastic materials should comply with RDC Resolution No.
Determination of trace water in industrial butadiene. Karl Fischer coulometric method (2)

 Time of Update: 2022-01-13

6) according to the requirements of the instrument manual, connect the gas outlet of the flash evaporator and the titration cell of the Karl Fischer coulometer (5.
Determination of trace water in industrial butadiene. Karl Fischer coulometric method (1)

 Time of Update: 2022-01-13

1 This standard specifies the Karl Fischer coulometric method to determine the content of trace water in industrial butadiene .
Determination of trace water in butadiene for industrial use. Karl Fischer coulometric method (3)

 Time of Update: 2022-01-13

) in the sample by mass fraction (mg/kg ), and calculate it according to formula (1): >>Where:>m
[Coal Chemical Industry] The Nitrogen Association released the list of “leaders” in the water

 Time of Update: 2022-01-13

According to reports, in 2020, the water efficiency "leader" companies in the nitrogen fertilizer and methanol industries include China Coal Ordos Energy Chemical Co.
High-performance coatings and water-based industrial coatings are shortlisted in the "Catalogue of Industries Encouraging Foreign Investment (2020 Edition)"

 Time of Update: 2022-01-11

At the same time, foreign-invested enterprises have the natural advantage of participating in the international economic cycle by arranging production factors and arranging supply chains on a global scale.
Do not wash your face with cold water after the cold wave and even hemifacial spasm

 Time of Update: 2022-01-11

of long-term medication is not good. Increasing the dose of drug treatment will increase the side effects . >In the cold winter season, Xie Chuncheng made the following
Mov Disord: DTI study found that free water in the dorsal medial nucleus of the thalamus is associated with cognitive decline in Parkinson's disease

 Time of Update: 2022-01-08

>Brain diffusion tensor imaging (DTI) can reflect cognitive changes in early Parkinson's disease (PD), but the measurement of free water (FW) based on the diffusion sequence has not been
Excellent performance, preparation of high-solid water-containing polyurethane!

 Time of Update: 2022-01-07

Take polyester as the main body to ensure strong mechanical properties, and then try to improve the water resistance of waterborne polyurethane by adding a part of polyether .
The impact of hail events on the carbon-water coupling process of Xishuangbanna rubber plantation...

 Time of Update: 2022-01-07

indicators that characterize their water use strategies, carbon-water cycle and other physiological
The UK and the EU have yet to reach an agreement on fishing in British waters

 Time of Update: 2022-01-07

After Brexit, French fishing boats staged a protest in front of the Port of Saint Helier near Jersey, England, demonstrating the unfair treatment they suffered from fishing in British waters, which attracted the attention of relevant parties .
The advantages and disadvantages of common water-based anticorrosive coatings!

 Time of Update: 2022-01-07

inorganic zinc-rich coatings mainly use inorganic silicate aqueous solution as the base material and zinc powder as the anticorrosive pigment. In order to improve the film formation and corrosion resistance of the water-based inorganic zinc-rich
Technology and Trade Ice Breaking and Fence Building | EU bans plastic food contact materials and products containing bamboo fiber from entering the market

 Time of Update: 2022-01-07

containing plant-based additives that do not comply with EU regulations will be rejected by the border and prohibited from entering the EU market; taxes levied on misdeclared plastic products will be recovered .
of packaged drinking water, soybeans and soy sauce were found to be unqualified

 Time of Update: 2022-01-07

/21); Apollo sterilized tableware used by Xu's People’s Tie Guo Duan New District Store in Jining District, Ulan Chabu City Tableware (delivery date 2021/10/14); the tableware used by the Apollo sterilized tableware (delivery date 2021/10/16) used
Ipsen Multi-Health joins hands with China Green Club to help rural children drink clean water

 Time of Update: 2022-01-03

"; color:black; } p. prnews_p { font-size:0. 62em; font-family:"Arial"; color:black; margin:0in; } Beijing , November 25, 2021/PRNewswire/ - Recently, Ipsen Multi-Health
The Yangtze River Water Biodiversity Protection Program has launched monitoring instruments to be dispatched!

 Time of Update: 2022-01-01

reproduction of endangered animals, which has played a certain economic value while protecting the number of organisms, which can be described as killing two birds with one stone .
Fighting for the battle of "lake revolution" water environment monitoring business goes online

 Time of Update: 2022-01-01

body, forming a layer of "green scum", which causes the organic matter accumulated at the bottom to decompose under anaerobic conditions to produce harmful gases and some plankton Biological toxins produced .

Related Keywords

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