Item Standard Result
Na2 B4O7 10H2O), % ≥ 99.5 99.57
Na2 CO3, % ≤ 0.10 0.10
Water insoluble matter, % ≤ 0.04 0.038
Na2 So4, % ≤ 0.20 0.17
Na Cl, % ≤ 0.03 0.025
Na2O, % ≥ 16 16.50
B2O3, % ≥ 35 35.7
Fe % ≤ 0.002 0.002
Particle size 0.18-0.25 mm 0.20mm
Na2 B4O7 10H2O), % ≥ 99.5 99.57
Na2 CO3, % ≤ 0.10 0.10
Water insoluble matter, % ≤ 0.04 0.038
Na2 So4, % ≤ 0.20 0.17
Na Cl, % ≤ 0.03 0.025
Na2O, % ≥ 16 16.50
B2O3, % ≥ 35 35.7
Fe % ≤ 0.002 0.002
Particle size 0.18-0.25 mm 0.20mm