Language :
SWEWE Member :Login |Registration
Search
Encyclopedia community |Encyclopedia Answers |Submit question |Vocabulary Knowledge |Upload knowledge
questions :What is sodium meta bisulphate?
Visitor (58.84.*.*)
Category :[Technology][Chemical Energy]
I have to answer [Visitor (3.215.*.*) | Login ]

Picture :
Type :[|jpg|gif|jpeg|png|] Byte :[<2000KB]
Language :
| Check code :
All answers [ 1 ]
[Member (365WT)]answers [Chinese ]Time :2016-12-11
White crystalline powder. The smell of sulfur dioxide, melting point decomposition. Soluble in water, slightly soluble in alcohol, ether. Exposure to air easily oxidized. The aqueous solution (1%) had a pH of 4.0 to 5.5. Strong reduction.

Density: 1.48

HG / T 3-1291-80
Chemical Analysis
                                (AR) (CP)
Content (SO2) Assay,% 58.5-65.0 58.5-65.0
Clarity test
Water insoluble matter
In water,% ≤ 0.005 0.01
Chloride (Cl),% ≤ 0.01 0.02
Arsenic (As) Arsenic,% ≤ 0.0001 0.0002
Heavy metals (in terms of Pb) Heavy metals,% ≤ 0.001 0.002
Iron (Fe) Iron,% ≤ 0.001 0.002

ACS level
Project name ACS Grade
Assay ≥58.5%
Insoluble matter ≤0.005%
Chloride (Cl) ≤ 0.02%
Heavy metals (as Pb) ≤0.001%
Iron (Fe) Iron (Fe) ≤0.002%

40% solution:

Ultra - pure grade
                                        (Ultrapure)
A clear, yellowish liquid
Assay assay 38-40%
Iron (Fe) ppm 5
Chloride (Cl) ppm 20
PH 3.9-4.4
Na2SO3% -
Na2SO4% -
Density (kg / l) 1.32-1.35

Sealed dry and cool place to save.
Product Use Reducing agents, preservatives, disinfectants, bleach. For organic bleaching and food preservation, in the dye, paper, leather, chemical synthesis and other industries as a reducing agent, brewing, beverage industry as a fungicide. For the production of saccharin, spices and hydroxylamine hydrochloride.
Search

版权申明 | 隐私权政策 | Copyright @2018 World encyclopedic knowledge