7779-86-4 Usage
Uses
Used in Paper Industry:
ZINC HYDROSULFITE is used as a brightening agent for groundwood, kraft, and other paper pulps to enhance their appearance and improve their quality.
Used in Sugar Industry:
ZINC HYDROSULFITE is used as a treatment agent for beet and cane sugar juices to improve the quality and purity of the final product.
Used in Mining Industry:
ZINC HYDROSULFITE is used as a depressant in mining flotations to selectively separate valuable minerals from waste materials.
Used in Textile Industry:
ZINC HYDROSULFITE is used as a bleaching agent for textiles, vegetable oils, straw, hemp, vegetable tannins, and animal glue, providing a brighter and cleaner appearance to the final product.
Air & Water Reactions
Water soluble. Mixing with limited quantities of water can cause heating and decomposition with release of irritating gaseous sulfur dioxide.
Reactivity Profile
A strong reducing agent. Inorganic reducing agents, such as ZINC HYDROSULFITE, react with oxidizing agents to generate heat and products that may be flammable, combustible, or otherwise reactive. Their reactions with oxidizing agents may be violent. Sulfites and hydrosulfites (dithionites) can react explosively with strong oxidizing agents. Sulfites generate gaseous sulfur dioxide in contact with oxidizing acids and nonoxidizing acids.
Health Hazard
INHALATION: Irritation of nose and throat. EYES: Mild irritant. SKIN: Irritant. INGESTION: Nausea and vomiting.
Fire Hazard
Special Hazards of Combustion Products: Decomposes giving off irritating SO 2
Safety Profile
Probably a poison.
When heated to decomposition it emits
toxic vapors of zinc and SOx.
Check Digit Verification of cas no
The CAS Registry Mumber 7779-86-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,7 and 9 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 7779-86:
(6*7)+(5*7)+(4*7)+(3*9)+(2*8)+(1*6)=154
154 % 10 = 4
So 7779-86-4 is a valid CAS Registry Number.
InChI:InChI=1/H2O4S2.Zn/c1-5(2)6(3)4;/h(H,1,2)(H,3,4);/q;+2/p-2/rO4S2Zn/c1-5-3-7-4-6(5)2
