reducingagents

Typical Utilizes Of Sodium Thiosulfate

reducingagent — Wed, 04 Aug 2010 01:53:05 +0000

Sodium thiosulfate is Mostly Utilized for photographic Business as fixative. Dichromate tanning when a Lowering agent, nitrogen exhaust neutralizer, mordant, straw and Tresses bleach, and dechlorination of pulp bleaching agent. Also Utilized for tetraethyl Guide, dyes intermediates Producing and
silver ore raised.

Also Utilized as a Substance / electroplating Business, Lowering agent, Drinking water purifying agent Performs. In the textile Business for bleaching cotton Right after dechlorination agent, sulfur dyeing wool Material dye, indigo dye anti-Whitened Real estate agents, pulp dechlorination agent, the pharmaceutical Business as detergents, disinfectants and bleaching Real estate agents.

Environmental Impact and Health Effects of Sodium

reducingagent — Mon, 19 Jul 2010 02:11:59 +0000

Sodium (symbol Na, atomic number 11, and atomic weight 22,9898) is a chemical a soft metal, reactive and with a low melting point, and a relative density of 0,97 at 20ºC (68ºF). The element’s name comes from the English word soda, which is sometimes used to describe various sodium compounds. From the commercial point of view, sodium is the most important of all the alkaline metals. Sodium reacts quickly with water, and also with snow and ice, to produce sodium hydroxide and hydrogen. When recently cut metallic sodium is exposed to air, it loses its silvery appearance and acquires an opaque grey colour due to the formation of a sodium oxide coating. While sodium can react with ammonia to form sodium amide, it does react with halogens. Sodium and hydrogen react above 200ºC (390ºF) to form sodium hydride.

Sodium also reacts with various metallic halides to generate the metal and sodium chloride. Sodium doesn’t react with paraffinic hydrocarbons, but it forms addition compounds with naphthalene and other aromatic polycyclic compounds and with aryl alkenes. The reaction of sodium with alcohols is similar to the reaction of sodium with water, but slower. There are two general reactions with organic halides. One of them requires the condensation of two organic compounds, which form halogens when those are eliminated. The second type of reaction includes the replacement of halogen by sodium, to obtain a sodium organic compound. Sodium is found in nature only in the combined state. It occurs in the ocean and in salt lakes as sodium chloride, NaCl, and less often as sodium carbonate, Na2CO3, and sodium sulfate, Na2SO4. Sodium is prepared commercially by the electrolytic decomposition of fused sodium chloride. Sodium ranks seventh in order of abundance of the elements in Earth’s crust. It is a necessary constituent of plant and animal tissue.

Countries in petrochemical industry will slow recovery

reducingagent — Mon, 12 Jul 2010 02:56:49 +0000

According to the latest BMI American petrochemical industry report, the current U.S. recovering petrochemical industry, but the relatively slow speed recovery, want to 2013 to restore to the level in 2008, in the long run, suffer from Asia and the Middle East competition intensifies, American petrochemical production capacity will be suppressed.
2009 major U.S. plastic resin product output for 3620 tons, small increase in 2008 than 0.9 percent. One low density polyethylene (LDPE) sales fell to 306 million tons; 5.7% The polystyrene (PS) sales fell 2 245 million tons, Polypropylene (PP) 2.8% year-on-year drop to 7.6 million tons, Polyvinyl chloride (PVC) output fell 1.3-580 million tons, And LLDPE and HDPE yield year-on-year growth rates rose 4.2 per cent and 1.1 million tons and 772 tons.
BMI, American petrochemical products output growth, but until 2011 and 9% in 2012 will slow rebound.

Sodium for Environmental Impact and Health Effects

reducingagent — Thu, 08 Jul 2010 01:42:22 +0000

Sodium is prepared commercially by the electrolytic decomposition of fused sodium chloride. It is a necessary constituent of plant and animal tissue. Sodium in its metallic form is very important in making esters and in the manufacture of organic compounds. Sodium is also a component of table salt, sodium chloride (NaCl) a very important compound found everywhere in the living environment. Its other uses are: to improve the structure of certain alloys; in soap, in combination with fatty acids, in sodium vapor lamps, to descale metals, to purify molten metals. Solid sodium carbonate is needed to make glass. The element is used in the manufacture of tetraethyl lead and as a cooling agent in nuclear reactors. Other important compounds of sodium include sodium carbonate, known as washing soda, and sodium bicarbonate, known as baking soda. Sodium hydroxide, known commercially as soda lye or caustic soda, is used in the manufacture of many important articles of immense importance. Sodium fluoride, NaF, is used as an antiseptic, as a poison for mice and roaches, and in ceramics. Sodium nitrate, known as Chile saltpeter, is used as a fertilizer. Sodium peroxide, Na2O2, is an important bleaching and oxidizing agent. Sodium thiosulfate, Na2S2O3 · 5H2O, known as hypo, is used in photography as a fixing agent.

Banned drugs, chemical industry have responsibility

reducingagent — Tue, 29 Jun 2010 03:34:37 +0000

These chemicals supervision work will focus on doing next three. One is to strengthen the precursor chemicals key varieties of supervision. Since last year, found many small chemical enterprise or business rental facilities illegal production, and hydroxyl cases of smuggling acetic anhydride found illegal business case that illegal production, management precursor chemicals problem exists. Safety supervision department will increase to small chemical enterprise, especially those with key precursor chemicals production equipment, a key enterprise of lease, strengthen inspection behavior of production, management precursor chemicals on the supervision, with varieties of public security organs, such departments jointly and illegal production, management precursor chemicals.

Second is the production, business enterprise online publication of non-pharmaceuticals precursor chemicals sales information. Safety supervision department and the relevant departments jointly adopt measures to implement the drug release on the net sales of precursor chemicals information must indicate the identity of the legal system of sales units, prevent precursor chemicals illegal production, management behavior.

Three is to advance the drug class precursor chemicals management information system construction, according to the provisions of the relevant information submitted will be treated in strict enterprise shall be punished in accordance with the regulations on the use of information systems and related inspection and supervision work and improve the information system, and can better reflect all related enterprise production and management of medicine of precursor chemicals.

Banned drugs, chemical industry have responsibility

reducingagent — Tue, 29 Jun 2010 03:32:08 +0000

sodium sulfite properties

reducingagent — Fri, 25 Jun 2010 02:07:50 +0000

Aw called acid sodium type, sodium sulfite deoxidization, molecular formula, NaHSO3 104.06. White or yellow crystalline powder. So2 or thick smell, relative density 1.48. Soluble in water, water (1%) of the pH value of 4.0 to 5.5, soluble in ethanol and acetone. In the air oxidation and thermal decomposition is extremely strong reducing.
Used to eliminate containing polyvinyl alcohol shrinkage of formaldehyde of water-soluble adhesive formaldehyde smell. Eliminate alkaline dextrin adhesives, for dextrin bleach. Also available for preservative, bleach, etc. Stored in a cool and dry area, moistureproof.

Sodium metabisulphite what properties and USES

reducingagent — Mon, 21 Jun 2010 02:06:36 +0000

A, product name:
Name of commodity: sodium metabisulphite chemical name: sodium metabisulphite: two sulfur acid sodium, five sulfur oxygen
Second, physical and chemical properties of white or light yellow finished crystal powder, wet when the relative density of 1.4. Soluble in water, glycerin, slightly soluble in alcohol. Damp, easy for easy oxidized sodium air. Contact with acid and create the sulfur release salts. Heat up to 150 ° decomposition.
Three, use:
The pharmaceutical industry used in the production of chloroform, styrene-acrylic pes and benzaldehyde. Rubber industry concreting used. Used for bleaching and dyeing industry of chlorine after cotton cloth, cook refined. Used for leather processing leather industry, can make leather soft, plump, tenacity, waterproof, bending, such as wear-resisting performance. Chemical industrial used in the production of hydroxyl hydroxylamine hydrochloride vanillin and etc. Photographic industry as contrast, etc. The food industry as bleach, antiseptic, osteoporosis, antioxidants, dillenii and thecurrent.

Agricultural ammoniacal chloride may further weakening

reducingagent — Mon, 21 Jun 2010 01:51:10 +0000

Since June, agricultural into chloride market movements, the general price shock slump in May is 10-30 yuan (tons price, similarly hereinafter), small drop in the high extent of 50 yuan. Present quotations, wet ammonium mostly factory for 450-52 yuan, dry ammonium mostly for 550-600 yuan, Wholesale market, wet ammonium mostly for 480 - $560, mostly for 6 ~ ($650. Hind, agricultural ammoniacal chloride market faced two big pressure, the market could further weakening.

Hand market demand. In China, most of agricultural ammoniacal chloride used to produce compound fertilizer. Current domestic market is still light compound, offer to drop, high-end products, offer parts cut a pricing relatively low price and small factory recently. At present domestic 45% of chlorine content, mostly for factory offers compound 1800-1850 yuan, 45% s-based compound content is mostly factory offers 2000-2050 yuan, while the actual product factory, the two extreme low chlorine base has come out around $17.5 s-based 1850-1900 yuan, may cut, 50-100 dollars. Compound fertilizer production situation without obvious difference, start at about 50% of the factory maintenance and conditions, and with the start of the summer corn according to demand situation gradually turned pale, and partial enterprise production and maintenance to fall after the start of wheat fertilizer supply again, hind the compound fertilizer production recovery of enterprises may further reduce starts. Fertilizer market for agricultural ammoniacal chloride in recession, the demand.

On the other hand the market supply increases. Most of our agricultural ammoniacal chloride by united, 1 ton production exists about 1 ton soda production chloride. In recent years, along with the increase of soda production in China, China’s rapid increase in productivity and chloride. According to statistics, 2009 in productivity is 1200 tons, chloride copolymer fertilizer production in China in 2005, the proportion of 4% by increased 6% of 2009. By 2010, will have to put the capacity of 1.7million tons, productivity will increase to chloride 1400 tons, a record. Preliminary is expected to yield to chloride by 2010, nearly 1,000 tons of five years, nearly 400 tons chloride yield increase.

Overall, the rapid increase of agricultural ammoniacal chloride market, but recent production demand, supply pressure increased significantly lighter, recent market is likely to continue.

Methanol market shakeouts

reducingagent — Thu, 17 Jun 2010 01:30:14 +0000

Week of methanol to range trade market. Among them, east area of south reverting to mild signs, no change in the rest declines, weak consolidation situation. Keep Although may reduce methanol quantity import a month, but in general stock market is still high, and downstream demand, lack of effective supply pressure is increased. At first, hind the anti-dumping, June cutting time arrival to import methanol fluctuated because of downstream products, but is not high, the market supply improvement is sufficient, restrict the methanol prices uplink space, methanol market will also in shakeouts.

In east China, the price of methanol market environment of slightly. The market transaction atmosphere is gentle, your mindset gradually stabilised, but still no amplification volume, the grocers though slow, have certain shipment by buying price, but the desire of restriction, price fluctuations. Last weekend in east China market quotation 2050-2100 mainstream (tons, similarly hereinafter).

South China market, the price of methanol atmosphere weakness fall modestly. The market situation is very weak, low downstream demand, buyers to purchase intention is not high, and the recent import methanol concentration to port, the market supply pressure increases, traders, having faith further price declines. Last weekend in mainstream market quotation 2040-2060 yuan, clinch a deal mainly in low, a few to 2,000 yuan.

Huazhong area. Low methanol market, Part of methanol device shutdown, manufacturers inventory maintenance to ease pressure and relatively stable prices, the mainstream in 1970-2050 yuan factory.

In north China market trends, methanol, manufacturers, prices lower delivery intention, the mainstream ex-works small-scope fluctuation in 1800-2030 yuan.

Northeast market price of light, methanol sideways. Due to increased demand, can effective delivery, but slow methanol manufacturer, so the price range inventory commonly. Currently, the coal enterprise in methanol 1800-1900 yuan, gas methanol device, manufacturers selling slow start full, prices continue to hold steady, the mainstream in 2000-2050 yuan quotation, methanol in liaoning province to keep the cash offer in 2080 ~ 21 yuan.