July 25, 1941
NEWS
EDITION
815
MALLINCKRODT-SODIUM SULFITE (and other SULFITES) H i g h SO2
Content
for
Greater
T h e S 0 2 c o n t e n t o f M a l l i n c k r o d t Sulfites,
Efficiency
Bisulfites
a n d r e l a t e d p r o d u c t s i s u n i f o r m l y h i g h f o r g r e a t e r ef ficiency
in use. More and m o r e buyers are recognizing
Mallinckrodt as a dependable source for these products· Study This Chart Carefully. It Contains
Valuable
Technical
Information.
M ALLINCKROD τ SULFITES Formula
Average*
99%
SODIUM
SULFITE
Na2SO3
CALCIUM
SULFITE
CaSO 3 + 11/2 H2O
POTASSIUM
SULFITE
POTASSIUM
as
Assays
Calculated SO2 E q u i v a l e n t
Na2SO3
5 0 %
Small G r a n u l e s Fine P o w d e r
SULFITE
SODIUM
META-BISULFITE
Freely Soluble
&.
Crystalline Powder
K2SO3
98%
as K2SOs
4 0 %
Coarse Crystalline Powder
K2S205
97%
as K 2 S 2 O s
5 6 %
Granular or Powdered
Moderately Soluble
9 9 % as (NH+) 2 S 0 3 + H 2 0
4 7 %
Small Granules
Freely SoIuble
(NH4) 2 SO 3
+
H2O
Na2S2O5
90%
as
Na2S2O5
Granular or Powdered
61 %
Mallinckrodt also s u p p l i e s — i n small or large quantities—Magnesium Sulfite, Sodium Bi sulfite, Zinc Sulfite, Barium Sulfite and Acid Sulfurous 6 % . Bottle or Barrel . . · Mallinckrodt Spells Quality
MALLINCKRODT CHEMICAL W O R K S Mallinckrodt Street, St. Louis, M o . ·
Water
45 %
*These fi gures are determined a t 1 he time o f manufac ture.
CHICAGO
in
1 0 4 % as CaSO 3 +11/2 H2O
META-BISULFITE
AMMONIUM
Solubility
Form
PHILADELPHIA
·
74 Gold Street, New York, Ν. Υ. ·
MONTREAL
·
TORONTO
Practically Insoluble
I I
j
Freely Soluble
1 1
Moderately Soluble 1
