POTASSIUM TETRABORATE TETRAHYDRATE Property

Melting point:

850 °C

Density 

1,74 g/cm³

solubility 

H₂O: 1M20°Cclear, colorless

form 

Powder

Specific Gravity

1.74 (anhy)

color 

White

PH

pH(10g/l, 25℃) : 9.0～9.4

Water Solubility 

Soluble in water

Merck 

14,7680

Exposure limits

ACGIH: TWA 2 mg/m3; STEL 6 mg/m3

EPA Substance Registry System

Boron potassium oxide (B4K2O7), tetrahydrate (12045-78-2)

Safety

Hazard Codes 

Xi,Xn

Risk Statements 

36/37/38-63

Safety Statements 

26-36-36/37

WGK Germany 

3

TSCA 

Yes

HS Code 

28299080

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H361Suspected of damaging fertility or the unborn child

Precautionary statements

P201Obtain special instructions before use.

P202Do not handle until all safety precautions have been read and understood.

P280Wear protective gloves/protective clothing/eye protection/face protection.

P281Use personal protective equipment as required.

P308+P313IF exposed or concerned: Get medical advice/attention.

P405Store locked up.

POTASSIUM TETRABORATE TETRAHYDRATE Chemical Properties,Usage,Production

Chemical Properties

-6mesh with 99.9% purity; ortho-rhomb, white powder(s); dehydration temp depends on partial pressure of H2O [CER91] [STR93] [KIR78]

Uses

Potassium tetraborate tetrahydrate (K₂B₄O₇.4H₂O) may be employed in the preparation of puffed and dense forms of anhydrous potassium tetraborate (purity = 99.5%, bulk density = 0.4 and 0.7gcm^-3). It may be used for the preparation of saturated K₂B₄O₇ solution required for the quantification of polyamines in various biological samples by HPLC.

General Description

Potassium tetraborate tetrahydrate is a hydrated tetraborate salt of potassium. Its crystal structure has been examined. Its crystals belong to the orthorhombic crystal system with space group P2₁2₁2₁. Aqueous solution of potassium tetraborate tetrahydrate on evaporation affords single crystals.