- NaH concentrationSO3 36% – 40%
- density at 20 ° C: 1.30 - 1.40 g / dm3
- transparent liquid, colorless to yellowish
- pH of a 10% aqueous solution: 2.5 - 5.5
- vapor pressure: 40 hPa (25 ° C)
- iron max 50mg / kg NaHSO3 in conversion to SO2
- selenium - max 10mg / kg NaHSO3 in conversion to SO2
- arsenic-max 3mg / kg
- lead-max 5mg / kg
- mercury - max. 1 mg / kg
Quality standard - compliant with the GZNF Factory Standard.