Sodium Borate, Brand Name : TanYun

We are offering sodium borate, sodium tetraborate.
cas
: 1330-43-4
1.physical and chemical properties:
1.1 molecule formula : na2b4o7
1.2 molecule weight : 201.22
1.3melting point : 742.5°c(for orthorhombic crystal a)664°c (for orthorhombic crystal b)
1.4density : 2.28 (a orthorhombic crystal) (b orthorhombic crystal)
1.5 properties : its hygroscopicity is extremely strong. It is dissolved in water. It can be slowly dissolved in methanol and formed a solution of 13-16% concentration
2. Technical indexes :
term
index
content of sodium borate,%
≥95-98
sodium oxide %
≥30
diboron trioxide%
≥66-68
3. Uses:sodium borate is mainly used in the manufacturing high quality glass, optical glass, glaze of pottery and porcelain, glaze of enamel, detergent, bleaching agent, cleaning agents, flame retardant, rust inhibitor and caking agent.
it could be also used as the supporter of the lubricant used in metal wiredrawing, the stabilizer and skeleton former in refractory material, the wraping-flux in metallurgy, the set retarder of cement and concrete, the buffer of ph value in water system and emulsifier of paraffin.
4. Safety description:
the product is harmful. It will harm body’s health by swallowing, breathing in, eyes contacting, skin contacting, eye contacting will lead to irritation. Mouse oral: ld 50=1060mgkg; rat oral: ld 50=1200mgkg. Wear safety-protective glasses dust proof gauze musk, rubber gloves during handling it.
5. Package: it is packed in woven bag, in which should be put two strata of plastic bags, the net weight is 25kg a bag.