Sodium Metabisulfite

$3.40
(No reviews yet) Write a Review
Shipping:
Calculated at Checkout
Adding to cart… The item has been added

Sodium Metabisulfite

Synonyms: Sodium metabisulphite; Disulfurous acid, disodium salt; Sodium Metabisulfite; Disodium disulphite; Pyrosulfurous acid, disodium salt.

Free flowing, white, fine granular crystal having a characteristic odor of sulfur dioxide and is soluble in water

USES:

Sterilization in many processes

Photography

Winemaking (Sterilization)

Tanning hides

INCI Name, CAS No., etc.

INCI Name: Sodium Metabisulfite
CAS No.: 7681-57-4
Formula: Na2S2O5
Molecular Weight: 190.11
pH of 5% Solution: 4.3
Bulk Density, lb/ft3: 86

Specifications

Appearance                                                   White Crystals

Arsenic (As)                                                   0.0 – 1.0 ppm

Sodium Metabisulfite (Na2S2O5)                        98.6 - 99.8 %

Chloride (Cl)                                                  0.0 - 0.02 %

Heavy Metals (as Pb)                                     0.0 – 10.0 ppm

Identification                                                  To Pass Tests

Insoluble Matter (Ca, Mg, NH4OH ppt)              0.0 - 0.05 %

Iron (Fe)                                                        0.0 – 5.0 ppm

Lead (Pb)                                                      0.0 - 0.5 ppm

pH (5% solution)                                            4.0 - 4.6

Reaction to Amm Silver Nitrate                        To Pass Test

Selenium (Se)                                                0.0 – 5.0 ppm

Sodium Sulfite (Na2SO3)                                  0.0 - 0.6 %

Sodium Thiosulfate (Na2S2O3)                          0.0 - 0.04 %

Sulfur Dioxide (SO2)                                       66.4 – 67.2 %

Safety Data Sheet

Technical Data Sheet