Sulfur Dioxide SO2
CAS No.: 7446-09-5
EINECS No.: 231-195-2
UN No.: UN1079
Purity: 99.9%
Dot Class: 2.3
Appearance: Colorless Liquid
Grade Standard: Industrial Grade
Precursor to sulfuric acid:
Sulfur dioxide is an intermediate in the production of sulfuric acid, being converted to sulfur trioxide, and then to oleum, which is made into sulfuric acid.
As a preservative reducing agent:
Sulfur dioxide is sometimes used as a preservative for dried apricots, dried figs, and other dried fruits, it is also a good reductant.
As a refrigerant:
Being easily condensed and possessing a high heat of evaporation, sulfur dioxide is a candidate material for refrigerants.
Sulfur dioxide (also sulphur dioxide) is the chemical compound with the formula SO2. It is a poisonous gas with a pungent, irritating smell, that is released by volcanoes and in various industrial processes. Since coal and petroleum often contain sulfur compounds, their combustion generates sulfur dioxide unless the sulfur compounds are removed before burning the fuel. Further oxidation of SO2, usually in the presence of a catalyst such as NO2, forms H2SO4, and thus acid rain.[2] Sulfur dioxide emissions are also a precursor to particulates in the atmosphere. Both of these impacts are cause for concern over the environmental impact of these fuels.
Commodity: Sodium Metabisulphite Molecular formula:Na2S2O5 Molecule Weight:190.10 H.S code:28321000 CAS:7681-57-4 Product Features Appearance : White Or Light Yellow Crystal Powder Odour: Sulfur Dioxide Taste : Salty Melting Poing : 150 Specific Density1.48 Ph : 4.0-4.6 Solubility : Soluble In Water ,insoluble In Alcohol Application: 1. For industry Mordant of printing and dyeing; Dechlorinate of textile after bleaching; Sulphonated agent and reducer of chemical industry and pharmacy; Bleach of paper pulp, bamboo and timber bleach of stapk; Treatment agent of waste water; Rubber solidifying agent ;Perfume industry is served as hydrocarbon perfume aldehyde ; The hide profession employ to do to molt dose and pliable dose and wearproof dose ,The sensitize industry is served as the developing agent reductant and the protection of fixing bath dose and so on; sewage treatment. 2.For food additive Bleach agent (e.g.candies, cake, bamboo shoots, etc);Loose agent (e.g.bread, cracker etc);Antiseptic and germicide (e.g.fruit juice, tinned foodbrews, the cereals food is defended storage etc);Inhibitor and freshen agent (e.g.day lily, seafood, fruit and vegetable etc) Specifications: Na2S2O5 97% min SO2 65% min Fe 0.0015% max water-Insoluble 0.01% max As 0.0001% max PH 4.0-4.6 Packing and Storage Knitted bags lined polyethylene plastic bags double packaging, Weighing 25Kg/50KG/1000Kg/1200kg. Transportation-and harsh rain. Stored in a cool, ventilated, dry place.
Commodity: Sodium Bisulfite Molecular Formula: NaHSO3 Molecular Weight: 104.06 Properties: White monoclinic crystalline powder with sulfur dioxide odor; relative density: 1.49; very easily soluble in water; can be decomposed when heated; slightly soluble in ethanol; aqueous solution is acidic; has strong reducing property; can be oxidized in the air or loose sulfur dioxide. Quality Standard: HG/T3492-80 Technical Indicator High-purity grade Acrylic grade Food grade Refined grade Industrial grade 1 NaHSO3 % 99.5 Insol. in water % 0.003, 0.005, 0.03, 0.04, 0.05 Chloride(Cl) % 0.003, 0.004 Iron(Fe) % 0.001 0.002 0.005 Heavy metal(Pb) 0.001 Arsenic(As) % 0.0001 Clarity test Qualified Use: It is used in the bleaching of cotton textiles; as reducing agent in dyes, paper-making, leather, chemical synthesis; in the manufacture of pharmaceutical intermediates, developer, food bleacher, antiseptic and anti-oxidants. Packing: In PP woven bag lined with PE bag; paper-plastic composite bag, and kraft paper bag etc. Net wt.: 25/50/1000 kgs/bag or upon clients' request.
1. Product name: Ammonium bisulfite solution 2. Molecular formula: NH4HSO3 3. Molecular weight: 99.10 4. Physical and chemical properties: light yellow liquid, with a little sulfur dioxide odor. Relative density (70%) : 1.4. 5. Technical index: Item Photographic grade Appearance clear light yellow liquid Content w/w % 68-72 pH value (stock solution 20C) 4.0-6.0 Iron (Fe) w/w % 0.001 6. Packing: 270kg plastic drum, 1.25MTS/IBC 7. Uses: in synthesizing dye intermediate, surfactant, herbicide, reducing agent in pharmaceutical industry, etc.
Caramel Color, E150, CAS no.8028-89-5, is a water soluble food coloring manufactured through heat treatment of a variety of sugars, available as Dark brown black powder or liquid. Caramel color is one of the oldest and most widely used food coloring's. Caramel Color is widely used as coloring agent and flavor enhancer. As an experienced Caramel Color manufacturer and supplier, we has been supplying and exporting Caramel Color for almost 10 years, we supply Caramel Color E150a, E150b, E150c and E150d. Please be assured to buy from us. Any inquiries about price and the market trend please feel free to contact us, we will reply you within 1 working day. Caramel Color Specification ITEM STANDARD RESULTS E 0.1%1CM (610nm) Absorbance 0.259-0.285 0.262 Specific Gravity(25�°C) 1.255-1.270 1.260 Viscosity(25�°C) Cps 8000 80 PH Value 2.7-3.3 3.0 Haze Pointâ?¥ mins 40 >40 Gelation Time â?¥mins 100 >100 Resinification â?¥ hrs 20 >20 Isoelectric Point 1.0
Product Description A colorless gas with a choking or suffocating odor. Boiling point -10C. Heavier than air. Very toxic by inhalation and may irritate the eyes and mucous membranes. Under prolonged exposure to fire or heat the containers may rupture violently and rocket. Liquid sulphur dioxide (SO2) is a versatile chemical with many uses, both in liquid form or as a source of gaseous SO2. Liquid SO2 is used the pulp and paper industry, mining industry, and in the food industry as a preservative. It can function as a reducing agent, an oxidizing agent, a pH controller, purifying agent, preservative, a germicide and bleaching agent. SO2 can also be used as a refrigerant, heat transfer fluid and selective solvent. Products specification: Specifications Special grade Grade A SO2 content % 99.97 99.90 Residue content % 0.010 0.040 Moisture content % 0.020 0.060 Arsenic(As) content % 0.000004 0.0001 Color (as liquid) Water White Water White Color (as gas) Colorless Colorless Standard No. GB3637-93
Sodium Metabisulfite, E223,CAS no.7681-57-4, appears as a white to yellow colored powder, and is often used in beer and wine making. Sodium Metabisulfite is water soluble and has a sulfur dioxide odor, manufacturing process via chemical synthesis, sodium bisulfite as raw material. Sodium Metabisulfite functions as a preservative and antioxidant known as E223, commonly used in dried fruits, shrimp, maraschino cherries, and lemon drinks. As an experienced Sodium Metabisulfite manufacturer and supplier, we has been supplying and exporting Sodium Metabisulfite for almost 10 years, please be assured to buy from us. Any inquiries about price and the market trend please feel free to contact us, we will reply you within 1 working day. Sodium Metabisulfite Specification ITEM STANDARD Appearance White or light yellow powder Content % 96.5 Heavy Metals (Fe) % 0.003 Heavy Metals( As)< % 0.0001 Charity Slightly turbid SO2 65 PH 4.0-5.0 Heavy Metals( Pb) % 0.0005
Dextrose Anhydrous (D-glucose) , CAS no. 50-99-7, is a sugar that's a stable, odorless, white crystalline powder, manufacturing process from starch. Dextrose Anhydrous is used in the production of baked goods, candy and gum, creams and frozen dairy products (like some ice-creams and frozen yogurts), alcoholic beverages, jarred and canned foods, cured meats and also energy drinks. As an experienced Dextrose Anhydrous manufacturer and supplier, we has been supplying and exporting Dextrose Anhydrous for almost 10 years, please be assured to buy from us. Any inquiries about price and the market trend please feel free to contact us, we will reply you within 1 working day. Dextrose Anhydrous powder Specification ITEM STANDARD APPEARANCE WHITE CRYSTALLINE POWDER SOLUBILITY FREELY SOLUBLE IN WATER, SPARINGLY SOLUBLE IN ALCOHOL OPTICAL ROTATION +52.5+53. APPEARANCE OF SOLUTION CLEAR,ODOURLESS MOISTURE 1.0% MAX SULFUR DIOXIDE 15PPM MAX CHLORIDES 125PPM MAX SULPHATED ASH 0.1% MAX CALCIUM 200PPM MAX SULPHATES 200PPM MAX BARIUM CONFORMS LEAD IN SUGARS 0.5PPM MAX ARSENIC 1PPM MAX TOTAL BACTERIA COUNT 1000PCS/G MAX MOLDS AND YEASTS 100PCS/G MAX Pyrogens (tal 10% Solution) 0.125eu/ml Max Escherichia Coli negative
Dextrose Monohydrate powder, CAS no. 5996-10-1, natural sweetener produced from starch. It is a white, crystalline powder with a sweet taste. Dextrose Monohydrate is used in wines, flavored enriched baked goods, soft drinks, cakes, puddings, dairy products, coffees, ice creams, meats, instant foods, and chewing gum. Dextrose anhydrous and Dextrose monohydrate are both purified and crystallized D-glucose compounds. As an experienced Dextrose Monohydrate manufacturer and supplier, we has been supplying and exporting Dextrose Monohydrate for almost 10 years, please be assured to buy from us. Any inquiries about price and the market trend please feel free to contact us, we will reply you within 1 working day. Dextrose Monohydrate powder Specification ITEM STANDARD APPEARANCE WHITE CRYSTALLINE POWDER SOLUBILITY FREELY SOLUBLE IN WATER, SLIGHTLY SOLUBLE IN ALCOHOL ASSAY 99.5% MIN OPTICAL ROTATION +52.6�°ï½?+53.2�° LOSS ON DRYING 10.0% MAX SULFUR DIOXIDE 0.002% MAX CHLORIDES 0.018% MAX RESIDUE ON IGNITION 0.1% MAX STARCH PASSES TEST LEAD 0.1MG/KG MAX ARSENIC 1MG/KG MAX TOTAL BACTERIA COUNT 1000PCS/G MAX MOLDS AND YEASTS 100PCS/G MAX ESCHERICHIA COLI NEGATIVE
