POTASSIUM SULFITE, DIHYDRATE is a white, monoclinic crystal or crystal powder that gradually oxidizes to sulfate in air. It is a chemical compound with the formula K2SO3·2H2O and is commonly used in various applications due to its unique properties.
7790-56-9
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Basic information
- Product Name: POTASSIUM SULFITE, DIHYDRATE)
- Synonyms:
- CAS NO:7790-56-9
- Molecular Formula: H5KO4S
- Molecular Weight: 140.19
- EINECS: N/A
- Product Categories: N/A
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Chemical Properties
- Melting Point: decomposes [KIR82]
- Boiling Point: N/A
- Flash Point: N/A
- Appearance: /white monoclinic crystals
- Density: N/A
- Refractive Index: N/A
- Storage Temp.: N/A
- Solubility: N/A
- Water Solubility: g/100g solution H2O: 47.52 (0°C), 49.01 (25°C), 55.53 (100°C); solid phase, K2SO3 [KRU93]
- CAS DataBase Reference: POTASSIUM SULFITE, DIHYDRATE)(CAS DataBase Reference)
- NIST Chemistry Reference: POTASSIUM SULFITE, DIHYDRATE)(7790-56-9)
- EPA Substance Registry System: POTASSIUM SULFITE, DIHYDRATE)(7790-56-9)
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Safety Data
- Hazard Codes: N/A
- Statements: N/A
- Safety Statements: N/A
- WGK Germany:
- RTECS:
- HazardClass: N/A
- PackingGroup: N/A
- Hazardous Substances Data: 7790-56-9(Hazardous Substances Data)
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7790-56-9 Usage
Uses
Used in Photography Industry:POTASSIUM SULFITE, DIHYDRATE is used as a photographic developer for its ability to reduce silver ions to metallic silver, which forms the image on photographic film or paper.
Used in Food and Wine Industry:
POTASSIUM SULFITE, DIHYDRATE is used as a food and wine preservative to prevent oxidation and spoilage, as well as to inhibit the growth of unwanted microorganisms. Its antioxidant properties help maintain the freshness and quality of food products and extend their shelf life.
Check Digit Verification of cas no
The CAS Registry Mumber 7790-56-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,7,9 and 0 respectively; the second part has 2 digits, 5 and 6 respectively.Calculate Digit Verification of CAS Registry Number 7790-56:
(6*7)+(5*7)+(4*9)+(3*0)+(2*5)+(1*6)=129
129 % 10 = 9
So 7790-56-9 is a valid CAS Registry Number.
InChI:InChI=1/K.H2O3S.2H2O/c;1-4(2)3;;/h;(H2,1,2,3);2*1H2/q+1;;;/p-2
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POTASSIUM SULFITE, DIHYDRATE)
