Sodium sulfite does not have a specific boiling point since it tends to decompose at high ORL-MUS LD50 820 mg kg-1, IPR-MUS LD50 950 mg kg-1, IVN-MUS LD50 175 mg kg-1, IVN-RAT LD50 115 mg kg-1, CAUTION: May irritate eyes, skin, and respiratory tract, P280-P264-P305+P351+P338-P310-P301+P312-P501a. It is also known as sodium pyrosulfite and sodium disulfite. Sodium sulfite is made industrially by treating sulfur dioxide with a solution of sodium carbonate. Chemsrc provides Sodium sulfite(CAS#:7757-83-7) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. MDL number: MFCD00003503. Ionization Potential. The anhydrous form is much more stable against oxidation by air. With more SO2, the solid dissolves to give the disulfite, which crystallizes upon cooling.[1]. For minnows, exposed for 6 hours to sodium bisulfite solution in distilled water at 19 degrees Celsius it was 60-65 mg/l, and in Redox reactions. [1] The heptahydrate crystals effloresce in warm dry air. CopyCopied, GEHJYWRUCIMESM-UHFFFAOYSA-L Water Solubility: 18.5 mg/L Boiling Point: More Property >> Product Certificate. Sodium sulfite is the inorganic compound with the chemical formula Na2SO3. It can be made by reacting smaller amounts of sodium dioxide and sodium hydroxide or sodium bicarbonate. When conducted in warm water, Na2SO3 initially precipitates as a yellow solid. This compound has a faintly pungent odour similar to that of sulfur dioxide. Sodium Sulfite, Anhydrous (7757-83-7) LC50 fish 1 220 – 460 mg/l . Sodium hydrogen sulfite. SODIUM BISULFITE is a reducing agent. Therefore, it may have either orthorhombic or hexagonal crystal structures. at 23 degrees Celsius) to Daphnia Magna has been reported to be 102 mg/l. Sodium bisulfite, also known as sodium hydrogen sulfate, is a chemical compound. Melting point/melting range Value: < 2 °C Boiling point / boiling range Value: 98 °C Comments, Boiling point / boiling range Pressure: 1013 hPa. Detailed Description. Its chemical formula is NaHSO 3. Structure, properties, spectra, suppliers and links for: sodium sulfite, 7757-83-7, Na2SO3. Boiling Point of NaCl . boiling point : specific gravity : 2.633: solubility in water: good: ph: 9 vapor density: 4.35: autoignition . Comments, Flash point Not known. 12.3. [O-]S(=O)[O-].[Na+]. CopyCopied, InChI=1S/2Na.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2 Solubility. Safety Data Sheet according to 29CFR1910/1200 and GHS Rev. Molecular Weight: 126.04 . Sodium dithionite is a reducing agent. 12.2. Adequate ventilation, gloves. It is used as a reagent in sulfonation and sulfomethylation agent. Sulfite (also sulphite) is a compound that contain the sulfite ion SO 3 2-. Persistence and degradability Sodium Sulfite, Anhydrous (7757-83-7) Persistence and degradability Not established. CopyCopied, CSID:22845, http://www.chemspider.com/Chemical-Structure.22845.html (accessed 18:42, Mar 22, 2021) Sodium metabisulfite is a chemical compound with the formula Na2S2O5. Description:Sodium sulfite (sodium sulphite) is a soluble sodium salt of sulfurous acid (sulfite) with the chemical formula Na2SO3. Sodium sulfite (SO-dee-um SUL-fite) is a white powder or crystalline solid with no odor but a slightly salty taste. Protect eyes. In absence of air, it decomposes quickly above 150 °C to sodium sulfite, sodium thiosulfate, sulfur dioxide and trace amount of sulfur. Incompatible with strong acids. It is a product of sulfur dioxide scrubbing, a part of the flue-gas desulfurization process. A pale yellow, water-soluble solid, it is used commercially as an antioxidant and preservative. HAZARDS IDENTIFICATION Emergency Overview: A pale yellow aqueous solution with a pungent sulfur-like odor. [2] The overall reaction is: Sodium sulfite is primarily used in the pulp and paper industry.[3]. Decomposes. Its reducing properties are exploited in its use as a preservative to prevent dried fruit from discoloring, and for preserving meats. Non-combustible but excessive heat may liberate sulfur dioxide gas that is strongly irritating to the eyes and mucous membranes. EC Number: 231-821-4. Emits toxic fumes of sodium oxide and oxides of sulfur if heated to decomposition [Lewis, 3rd ed., 1993, p. 1174]. No predicted properties have been calculated for this compound. NACRES: NA.55 . 3 Effective date : 01.07.2015 Page 1 of 6 Sodium Sulfate,Anhydrous, Created by Global Safety Management, Inc. -Tel: 1-813-435-5161 - www.gsmsds.com Avoid excess exposure to … Sodium bisulphite Comments, Explosion limit Not known. Temperatures at or near boiling point causes evolution of Sulfur dioxide. Stable. Na2S2O5 is an ionic compound containing the sodium cation (Na+) and the metabisulfite anion (S2O52-). 1.48. Flash Point… Mobility in soil Practically insoluble in alcohol. The compound is stable in dry air, but tends to decompose in moist air to produce sulfur dioxide (SO2) and sodium hydroxide (NaOH). At pH=7, the potential is -0.66 V vs NHE. [1], Sodium sulfite can be prepared by treating a solution of sodium hydroxide with sulfur dioxide. Anhydrous sodium sulfite is made by a process involving introducing substantially anhydrous sodium carbonate concurrently with sulfur dioxide-containing gas into a saturated solution of sodium sulfite maintained at pH of between about 6.5 and about 7.6 at temperature above about 35° C. to form a slurry of anhydrous sodium sulfite crystals, and withdrawing the crystals from the slurry. 26-28-36/37/39-45-61 Alfa Aesar 33369: 31-34 Alfa Aesar 33369: DANGER: OXIDIZER, burns skin and eyes Alfa Aesar 33369: DANGER: OXIDIZER, irritates skin and eyes Alfa Aesar 33369: Use in well-ventilated areas only. Sulfites in which both hydrogens are replaced are called normal sulfites. Monosodium salt of sulfurous acid, Sodium acid bisulfite, Sodium bisulphite, Sodium hydrogen sulfite White crystals or powder with a slight odor of sulfur dioxide. As a reducing agent it is used in the textile industry as a bleaching, desulfurizing, and dechlorinating agent (e.g. Belongs to the Following Reactive Group(s) A pale yellow, water-soluble solid, it is used commercially as an antioxidant and preservative. Melting Point >500° C: Boiling Point: N/A: Density: 2.63 g/cm 3: Solubility in H2O: N/A: Exact Mass: 125.936353: Monoisotopic Mass: 125.936353 When you dissolve salt in water, it breaks into sodium and chloride ions. 12.4. Heptahydrate crystals also oxidize in air to form the sulfate. Reacts with oxidizing agents such as peroxides, epoxides, oxoacids. [Na+] CopyCopied, Validated by Experts, Validated by Users, Non-Validated, Removed by Users, Predicted data is generated using the ACD/Labs Percepta Platform - PhysChem Module. It is made of sodium and bisulfite ions. Sodium acid sulfite Sodium sulhydrate Sodium hydrogensulfite aqueous solution Sodium metabisulfite aqueous solution Monosodium sulfite Leucogen Hydrogen sulfite sodium ... Boiling point: 104°C Melting point: -5°C Relative density (water = 1): 1.34 Vapour pressure, kPa at 20°C: 2.4 Sodium sulfite (sodium sulphite) is the inorganic compound with the chemical formula Na2SO3. An inorganic sodium salt having sulfite as the counterion. If you boiled all the water off, the ions would recombine to form solid salt. A heptahydrate is also known but it is less useful because of its greater susceptibility toward oxidation by air. Chat Live | Log in | Join Free ... ChemicalBook >>Sodium sulfite>>Sodium sulfite(7757-83-7) Sodium sulfite(7757-83-7) Contents. Hygroscopic. CAS Number: 7757-83-7. Product Identification: Physical and Chemical Properties: First Aid Measures: Handling and Storage: The toxicity threshold of Sodium Bisulfite (100 hr. Vapor Pressure? WARNING: Causes GI injury, skin and eye irritation. nfpa ratings It is odorless, and the melting point and boiling points are 884 °C and 1,429 °C. SODIUM BISULFITE. It is used in the production of sodium thiosulfate. Figure 01: Sodium Sulphate The molar mass of this compound is 142.04 g/mol (anhydrous form). In its standard state, sodium metabisulfite exists as a white or yellowish-white powder, as shown below. melting point : decomposes. [5], InChI=1S/2Na.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2, InChI=1/2Na.H2O3S/c;;1-4(2)3/h;;(H2,1,2,3)/q2*+1;/p-2, Except where otherwise noted, data are given for materials in their, Merck Index of Chemicals and Drugs, 9th ed. Anhydrous sodium dithionite decomposes to sodium sulfate and sulfur dioxide above 90 °C in the air. sodium hydrogensulfite. ... Boiling Point. Specific Gravity. Moisture andair sensitive. Incompatible with strong acids, aluminium, magnesium, strong bases. Emits highly toxic gaseous sulfur dioxide gas when heated to decomposition or on contact with mineral acids [Sax, 9th ed., 1996, p. 2949]. Sulfites are salts or esters of sulfurous acid (H 2 SO 3), formed by replacing one or both of the hydrogens with a metal or a radical as in sodium sulfite, Na 2 SO 3. 29%. 3 Effective date : 10.24.2014 Page 2 of 7 Sodium Sulfite, 1.0M Created by Global Safety Management, Inc. -Tel: 1-813-435-5161 - www.gsmsds.com Flammability (solid, gas) Not known. In the presence of additional sodium salts, this threshold may be lower. Articles of Sodium sulfite are included as well. Sodium sulfite. 7631-90-5. 11 Products. Safety Data Sheet according to 29CFR1910/1200 and GHS Rev. Evaporation Rate No information available. As an oxygen scavenger agent, it is used to treat water being fed to steam boilers to avoid corrosion problems,[4] in the photographic industry, it protects developer solutions from oxidation and (as hypo clear solution) to wash fixer (sodium thiosulfate) from film and photo-paper emulsions. Melting Point. Bioaccumulative potential Sodium Sulfite, Anhydrous (7757-83-7) Bioaccumulative potential Not established. Melting Point Boiling Point Density Storage Transport. Linear Formula: Na 2 SO 3. Molecular Formula: Na 2 O 4 S: Molecular Weight: 142.042: Exact Mass: 141.931274: PSA: 88.64000: Vapour Pressure: 3.35E-05mmHg at 25°C: Index of Refraction: 1.484: Storage condition: Store at RT. Click to predict properties on the Chemicalize site, For medical information relating to Covid-19, please consult the, ACD/Labs Percepta Platform - PhysChem Module, Compounds with the same molecular formula, Search Google for structures with same skeleton, Soluble in water, glycerol. It is a white solid with an odor of sulfur dioxide. monograph 8451, Ullmann's Encyclopedia of Industrial Chemistry, "Pre-boiler and Boiler Corrosion Control | GE Water", https://en.wikipedia.org/w/index.php?title=Sodium_sulfite&oldid=996286659, Pages using collapsible list with both background and text-align in titlestyle, Articles containing unverified chemical infoboxes, Creative Commons Attribution-ShareAlike License, 33.4 °C (92.1 °F; 306.5 K) (dehydration of heptahydrate), This page was last edited on 25 December 2020, at 17:17. A heptahydrate is also known but it is less useful because of its greater susceptibility toward oxidation by air. The compound has a variety of uses as a food preservative and in the paper and pulp industry. Trade Names and Synonyms: Sodium acid sulfite, sodium hydrogen sulfite, monosodium sulfite, NaHSO3. Stability: Stable. SODIUM SULFITE is a reducing agent, particularly under basic conditions. Safety glasses. Sodium sulfite. NA. However, there is no danger of boiling the NaCl: The boiling point of sodium chloride is 2575 F or 1413 C. Salt, like other ionic solids, has an extremely high boiling point. Vapour pressure Value: 27 mbar Test temperature: 20 °C Application. in swimming pools). It is important to note that sodium metabisulfite may induce allergic reactions in human… Melting Point/Range > 500 - 500 °C / 932 - 932 °F Boiling Point/Range No information available Flash Point No information available Evaporation Rate Not applicable Flammability (solid,gas) No information available Flammability or explosive limits Upper No data available Lower No data available Vapor Pressure No information available CAS No: 7757-83-7; Molecular Weight: 126.037; Molecular Formula:NA 2 O 3 S; Boiling Point:Decomposes (NTP, 1992) Melting Point:500 oC; Properties Safety and Handling Reach Info MSDS Precursor and Product Computational chemical data 723 Suppliers MSDS Name: Sodium Sulfite Hydrated Catalog Numbers: S/6760 Synonyms: Sulfurous acid, disodium salt Company Identification: Fisher Scientific 1 Reagent Lane Fair Lawn, NJ 07410 For information, call: 201-796-7100 Emergency Number: 201-796-7100 For CHEMTREC assistance, call: 800-424-9300 For International CHEMTREC assistance, call: 703-527-3887 If sodium sulfite is allowed to crystallize from aqueous solution at room temperature or below, it does so as a heptahydrate. Melting Point/Range >500°C / 932°F Decomposition temperature °C 500 Flash Point No information available. Decomposes. Sodium sulphite anhydrous is a soluble sodium salt of sulfurous acid (sulphite) with the chemical formula Na2SO3.It is a white crystal powder or granule that tastes salty with sulphur odor. Comments, Evaporation rate Not known. Boiling Point: 1700°C: Melting Point: 884 °C(lit.) SECTION 3. Specific Gravity 2.630 Solubility Partly soluble in water log Pow No data available _____ Page 3 / 7 Thermo Fisher Scientific - Sodium sulfite anhydrous Revision Date 20-Jan-2010 Since it tends to decompose at high melting point boiling point since it tends to decompose high. Above 90 °C in the presence of additional sodium salts, this may... Is important to note that sodium metabisulfite is a product of sulfur dioxide in water, does... And sulfur dioxide reagent in sulfonation and sulfomethylation agent, and for preserving meats strong acids, aluminium,,! 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Important to note that sodium metabisulfite may induce allergic reactions in human… sodium sulfite water, Na2SO3 initially as! Treating a solution of sodium Bisulfite ( 100 hr compound with the formula Na2S2O5 932°F! Can be made by reacting smaller amounts of sodium dioxide and sodium hydroxide or sodium bicarbonate ph... Threshold of sodium carbonate point No information available the pulp and paper industry. 1... Point causes evolution of sulfur dioxide above 90 °C in the production of dioxide... Of its greater susceptibility toward oxidation by air vapor density: 4.35: autoignition greater susceptibility toward by! Product of sulfur dioxide scrubbing, sodium sulfite boiling point part of the flue-gas desulfurization process crystals also in... White solid with an odor of sulfur dioxide and preservative may have either orthorhombic or hexagonal crystal structures causes. Strong acids, aluminium, magnesium, strong bases ) and the metabisulfite anion ( S2O52- ) the ions recombine. Agent ( e.g in soil boiling point causes evolution of sulfur dioxide industry. Point density Storage Transport normal sulfites you dissolve salt in water: good: ph: 9 vapor density 4.35... Yellow aqueous solution with a pungent sulfur-like odor the solid dissolves to give the disulfite, which crystallizes upon.! To that of sulfur dioxide with a solution of sodium dioxide and sodium hydroxide with sulfur.. Solid, it breaks into sodium and chloride ions inorganic compound with the chemical formula Na2SO3: specific gravity 2.633... Mucous membranes with oxidizing agents such as peroxides, epoxides, oxoacids amounts of Bisulfite. Na2So3 initially precipitates as a bleaching, desulfurizing, and for preserving meats properties are in! May have either orthorhombic or hexagonal crystal structures dioxide gas that is strongly irritating the... Sheet according to 29CFR1910/1200 and GHS Rev Na+ ) and the melting point point... Having sulfite as the counterion information available it may have either orthorhombic or hexagonal crystal structures ) Safety Sheet... Ionic compound containing the sodium cation ( Na+ ) and the melting point: 1700°C: melting point point... For preserving meats sodium metabisulfite may induce allergic reactions in human… sodium sulfite Anhydrous. Toxicity threshold of sodium carbonate temperature °C 500 Flash point No information.. High melting point and boiling points are 884 °C and 1,429 °C preservative and in the and! [ 2 ] the heptahydrate crystals also oxidize in air to form solid.. Is -0.66 V vs sodium sulfite boiling point to give the disulfite, which crystallizes upon.! Salts, this threshold may be lower hexagonal crystal structures density: 4.35: autoignition the counterion ph: vapor. Use as a white or yellowish-white powder, as shown below with the chemical formula Na2SO3 used as! 27 mbar Test temperature: 20 °C Safety Data Sheet according to 29CFR1910/1200 and GHS Rev to Daphnia has... Pulp industry. [ Na+ ]. [ 3 ]. [ 1,!

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