Borax powder used as a research chemical

Executive standard: enterprise standard

English name:sodium borate

Chemical Name:sodium tetraborate               

CAS RN : 1330-43-4

1. Physical and chemical properties:

1.1 Molecular formula: Na2B4O7

1.2 Molecular weight: 201.22

1.3 Melting point: 742.5°C (orthorhombic A) 664°C (orthorhombic B)

1.4 Density: 2.28 (A orthorhombic) (B orthorhombic)

1.5 Performance: extremely hygroscopic. It dissolves in water. Can be slowly dissolved in methanol to form a solution with a concentration of 13-16%

2. Purpose:

Sodium borate is mainly used in the manufacture of high-quality glass, optical glass, ceramic glaze and

Porcelain, enamel glaze, detergent, bleach, cleaning agent, flame retardant, antirust agent, caking agent

It can also be used as carrier, stabilizer and skeleton of metal wire drawing lubricant

Precursor in refractory materials, coating flux in metallurgy, retarder for cement and concrete, buffer for PH value in water system, emulsifier for paraffin.

3. Safety instructions:

This product is harmful. Causes irritation if swallowed, inhaled, eye contact, skin contact, eye contact. Oral administration to mice: LD 50=1060mg/kg; Oral administration to rats: LD50=1200mg/kg. Wear safety glasses, dust-proof gauze, and rubber gloves during operation.

4. Packaging:

Packed in a woven bag with two layers of plastic bags inside, each bag has a net weight of 25kg.

5. Storage:

It should be stored in a cool, ventilated and dry warehouse. The shelf life is one year. Under normal storage conditions, it can still be used after re-inspection after the specified date. Sodium borate is a stable crystal and cannot cause chemical changes. If it is damp, it will react with water and release a small amount of heat, forming sodium borate with ten crystal waters, so it should be kept properly, and it cannot be exposed to a humid environment or a large environment with changes in temperature and humidity, otherwise it will condense piece. So it is necessary to ensure good packaging.

6. Transportation:

During transportation, it should be protected from rain and moisture, and should not be mixed with strong oxidants.