Specifications for Anhydrous Borax | | | ||
No. | Item | Standard | ||
1 | Na2B4O7 | ≥99.50 % | ||
2 | Na2O | ≥31% | ||
3 | B2O3 | ≥68% | ||
4 | Fe | ≤18ppm | ||
5 | Water insolube | ≤920ppm | ||
6 | Water Content | ≤1% |