美女被强奷到高潮到抽搐在线观看

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          Tel:0086-28-85367008  
          Fax:0086-28-85293217
          E-mail:
          liaoyi@scgiant.com

          Add:No. 5-1426 Weima Plaza, No.2 Gaopan

          Road,Chengdu City,Sichuan,CP.R. China

           

          Contact

          Sichuan Giant Chemical Technology Co., Ltd    Tel:0086-28-85293317 Fax:0086-28-85293217   蜀ICP備11026201號    Power by 300.cn

          產品展示

          Na2CO3(Light)

          Industrial Sodium Carbonate (Light) Used in glass industry, chemical industry, metallurgical industry, papermaking,soap,textile,printinganddye,tanning,food,medicine,etc.
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          Product description

          Industrial Sodium Carbonate (Light)

          Name of Product

          Industrial sodium carbonate light

          Molecular Formula

          Na2CO3

          H.S.Code

          28362000

          Usage

          Used in glass industry, chemical industry, metallurgical industry, papermaking,soap,textile,printinganddye,tanning,food,medicine,etc.

          Package

          25kg/pack,50kg/pack,750kg/pack,1000kg/pack

          Storage condition

          Store it in ventilated dry place; do not mix with acid substances.

           

          Quality standard

          Industrial sodium carbonate light /Quality Standard:No.GB210.1-2004

          Item

          Superb product

          First-class
          product

          Qualified product

          Total alkali content(as per mass fraction of Na2CO3  on dry basis), %≥

          99.2

          98.8

          98.0

          Sodium chloride(as per mass fraction of NaCl on dry basis),  %≤

          0.70

          0.90

          1.20

          Mass fraction of Fe(on dry basis ), %≤

          0.0035

          0.006

          0.010

          Mass fraction of insoluble substance in water, %≥

          0.03

          0.10

          0.15

           

          Molecular formula:
          Identification
          Chinese Name: sodium carbonate; soda; soda
          English Name: Sodium Carbonate; Soda ash
          RTECS:VZ405000
          CAS:497-19-8
          Molecular formula: Na2-C-O3
          Physicochemical properties
          White powder or fine grain. It has a hygroscopic nature. Relative density of 2.532 (20/4 C), melting point 851 C, easy to dissolve in water, at 35.4 C, the solubility of the maximum solubility in 100 grams of water can be dissolved in 49.7 sodium carbonate, dissolved in glycerol, slightly soluble in anhydrous alcohol, insoluble in acetone, dissolving in water and exothermic, due to hydrolysis of sodium hydroxide PH=11.6, acid to produce corresponding salt, and release carbon dioxide to start decomposition: 400 centigrade decomposition decomposition decomposition The formation of sodium oxide and carbon dioxide. Long term exposure to air can absorb air moisture and carbon dioxide to form sodium bicarbonate and form lumps.
          Contact opportunity
          The vast majority are used in industry and in small parts for civilian use, used in sodium salt glass, soap, metallurgical industry and smelting flux, flotation agent for mineral processing, steelmaking and antimony as desulfurizer, printing and dyeing industry used as water softener, removal of oil and silk, color yarn yellowing agent, alkaline flux of sugar porcelain industry as the pigment of sugar porcelain, and leather industry As a degreasing agent for leather paint, chrome leather and soft leather are improved, and the alkalinity of chrome leather soften is usually enhanced. Photography and analytical chemistry are also available.
          Intrusion pathway
          It can enter the body through the mucous membrane.
          A brief introduction to toxicology
          The rats received oral LD50: 4090 mg/kg and inhaled LC50: 2300 mg/m3/2H. Mice received oral LD50: 6600 mg/kg and inhaled LC50: 1200 mg/m3/2H.
          It has a stimulating effect on the skin and mucous membrane.
          This product is partially hydrolyzed by water to form sodium hydroxide and sodium bicarbonate and release heat, so the concentrated solution or dust contact skin and eye can cause burns, but the degree of damage is lighter than sodium hydroxide. It is reported that 2% solution has no harmful effect on the eye.
          performance
          Respiratory tract: exposure to dust can cause irritation.
          Eye: contact with dust or solution, mild symptoms of irritation, conjunctivitis; severe cases can cause burns.
          Skin: contact can cause dermatitis, contact with concentrated solution or wet skin contact with dust can cause burns.
          Handle
          If the contact is more or thicker, leave the scene immediately to the fresh air, and rinse immediately with plenty of water when the skin or eyes are contaminated.
          Symptomatic treatment should be performed when respiratory tract inflammation, conjunctivitis or dermatitis occur.
          Treatment of eye or skin burns by alkali burns. See "chemical eye burns" or "chemical skin burns".
          The content is collected from the Internet, and the copyright belongs to the original author.
          Corresponding parameter set not found, please add it in property template of background
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