Amorphous element boron/Boron/7440-42-8

 Amporphous element boron/Boron/7440-42-8 Product Description    English name:Amporphous element boron  English another name:Boron appearence is black powder.  CAS RN:7440-42-8  1 Physical and chemical properties: 1.1 Elementary symbol:B 1.2 Atomic weight:10.81(on 1979 international atomic weight) 1.3Solubility: It is undissolved in water, hydrochloric acid, ethanol and ethyl ether, but dissolvable in cold concentrated basic solution and decomposed, hydrogen is release at the same time. It can be oxidized by concentrated sulfuric acid or nitric acid to boric acid. 1.4 Properties: Boron is on a special place in the mid of metal and nonmetal on the periodic table of elements. Its chemical properties are more active because of very strong negative electricity, small atomic radius and centralized nuclear charge. It is stable in normal temperature, oxidized when heating to 300°C,and burned if heated to 700°C.It is tasteless and odorless. Its nonmetal property is similar to silicon. Boron can interact with oxygen, nitrogen, sulfur, halogen or carbon etc. It can be combined directly with many sorts of metals to form the boronic compounds. Moreover boron can be also reacted with organic compounds to generate some compounds, in which boron is directly joined to carbon, or oxygen exists between boron and carbon. 2. Technical indexes:

<Span style="font-size: 14px; font-family: 'times new roman', times;">Item	Index
Total Boron(B) content,%	≥90
Water soluble Boron(B) content %	≤1.0
PH value	6.0-8.0&4.0-5.5
Moisture content, %	≤1.0
Hydrogen peroxide insoluble	≤1.50
Appearance(see with eyes) %(m/m)	Pale brown or brown-black amorphous powder

3. Uses:Boron is mainly used in metallurgy, electronics, medicine, ceramics, nulear industry and chemical industry etc, it is used in the form of compound or is added in some alloys as a addend. It can be used in smelting of some special alloy steels and as the gas remover for the melting steel, in the burn-entraining pole of burning-entraining tube in the electric industry, in the control stick of atomic reactor, and in the high-energy fuels for rocket. It is a important material for making high-pure halogenated borons, also a material for making a variety of boronic compounds. A lot of noble and rare metals can be substituted and saved by it. Boron and its compounds can be also used as the catalyst for some organic chemical reactions, and so on 4. Package:It’s vacuum-packed in the aluminium foil bags, in which has been put the plastic bag. Net weight 1kg a bag.   Packaging & Shipping   Company Information One of the biggest professional chemical materials manufacturers and suppliers which has passed GJB9001B 2009, With over 48 years experience in this field, our main products include fine chemical products, polyurethane foam gap filling agent, PVB,chlorinated paraffin, aerosol cans,  military and civil products, which are widely used in construction, industry daily chemical, medicine and other fields.   Cooperative partner   Certificate   FAQ 1,What are your prices?       Our prices are subject to change depending on supply and other market factors. We will send you an updated price list after your company contact us for further information. 2,Do you have a minimum order quantity?        Yes, we require all international orders to have an ongoing minimum order quantity. If you are looking to resell but in much smaller quantities, we recommend you check out our website 3,Can you supply the relevant documentation?        Yes, we can provide most documentation including Certificates of Analysis / Conformance; Insurance; Origin, and other export documents where required.  4,What is the average lead time?         For samples, the lead time is about 7 days. For mass production, the lead time is 20-30 days after receiving the deposit payment. The lead times become effective when (1) we have received your deposit, and (2) we have your final approval for your products. If our lead times do not work with your deadline, please go over your requirements with your sale. In all cases we will try to accommodate your needs. In most cases we are able to do so. 5,What kinds of payment methods do you accept?         You can make the payment to our bank account, Western Union or PayPal:
         30% deposit in advance, 70% balance against the copy of B/L. 6,What is the product warranty?        We warranty our materials and workmanship. Our commitment is to your satisfaction with our products. In warranty or not, it is the culture of our company to address and resolve all customer issues to everyone’s satisfaction 7,Do you guarantee safe and secure delivery of products?       Yes, we always use high quality export packaging. We also use specialized hazard packing for dangerous goods and validated cold storage shippers for temperature sensitive items. Specialist packaging and non-standard packing requirements may incur an additional charge. 8,How about the shipping fees?       The shipping cost depends on the way you choose to get the goods. Express is normally the most quickest but also most expensive way. By seafreight is the best solution for big amounts. Exactly freight rates we can only give you if we know the details of amount, weight and way. Please contact us for further information.   Our Services Warm and Efficient Service 1.Forty years technique deposition  2.Military standard quality 3.Free sample 4.Small order is acceptable      

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