velcorin
dimethyl dicarbonate
CAS: 4525-33-1
Molecular Formula: C4H6O5
velcorin - Names and Identifiers
| Name | dimethyl dicarbonate |
| Synonyms | DMDC velcorin methylpyrocarbonate DIMETHYL DICARBONATE dimethyl dicarbonate dimethyl pyrocarbonate DIMETHYL PYROCARBONATE DimethylDicarbonate(Dmdc) oxydi-formicacidimethylester DICARBONIC ACID DIMETHYL ESTER PYROCARBONIC ACID DIMETHYL ESTER |
| CAS | 4525-33-1 |
| EINECS | 224-859-8 |
| InChI | InChI=1/C4H6O5/c1-7-3(5)9-4(6)8-2/h1-2H3 |
velcorin - Physico-chemical Properties
| Molecular Formula | C4H6O5 |
| Molar Mass | 134.09 |
| Density | 1.25g/mLat 25°C(lit.) |
| Melting Point | 15-17°C |
| Boling Point | 45-46°C5mm Hg(lit.) |
| Flash Point | 80°C |
| Solubility | 35g/l (decomposition) |
| Vapor Presure | 0.7 hPa (20 °C) |
| BRN | 956715 |
| Storage Condition | Store below +30°C. |
| Explosive Limit | 3-29.9%(V) |
| Refractive Index | n20/D 1.392(lit.) |
| Physical and Chemical Properties | Appearance: colorless transparent liquid |
| Use | For cold sterilization of the following types of beverages:
fruit-flavored beverage high energy beverage (with or without carbon dioxide) tea beverages (with or without carbon dioxide) beverage with fruit juice (with or without carbon dioxide, fruit juice up to 100%) |
velcorin - Risk and Safety
| Hazard Symbols | T - Toxic |
| Risk Codes | R21/22 - Harmful in contact with skin and if swallowed. R23 - Toxic by inhalation R34 - Causes burns |
| Safety Description | S18 - Handle and open container with care. S26 - In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. S28 - After contact with skin, wash immediately with plenty of soap-suds. S36/37/39 - Wear suitable protective clothing, gloves and eye/face protection. S38 - In case of insufficient ventilation, wear suitable respiratory equipment. S45 - In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) |
| UN IDs | UN 2927 6.1/PG 2 |
| WGK Germany | 3 |
| RTECS | HT0362500 |
| FLUKA BRAND F CODES | 9-21 |
| HS Code | 2920 90 10 |
| Hazard Class | 6.1(a) |
| Packing Group | II |
| Toxicity | LD50 orally in Rabbit: 335 mg/kg LD50 dermal Rat > 1250 mg/kg |
velcorin - Reference Information
| EPA chemical information | Information provided by: ofmpub.epa.gov (external link) |
| introduction | dimethyl dicarbonate (Dimethyl dicarbonate,DMDC), also known as viguoling, is a fruit juice beverage preservative (INS No. 242) allowed in the use standard of food additives in China. Under normal temperature or even low temperature conditions, DMDC has a strong ability to kill many contaminated bacteria in fruit juice beverages, and its antiseptic effect is closely related to the deactivation of key enzyme proteins in the bacteria by DMDC modification. Compared with other physical sterilization technologies, the use of DMDC has become one of the hot spots in the research of emerging non-thermal sterilization technologies due to its low cost, simple operation and safety, and does not affect the taste, smell and color of products. |
| application | DMDC is widely used in fruit juice and its technology is relatively mature. The sterilization effect of DMDC in fruit juice is affected by the type and strain of fruit juice, and the combined use of DMDC and other sterilization technologies can greatly improve the sterilization effect. |
| mechanism of action | DMDC can penetrate cell membrane and interact with enzymes in microorganisms to block metabolism, thus achieving bactericidal effect. Even at very low concentrations, DMDC can effectively kill typical beverage spoilage bacteria without affecting the taste, flavor and color of the beverage. In addition, DMDC can be rapidly and completely hydrolyzed to trace amounts of carbon dioxide and methanol in beverages. This is also a natural ingredient in fruit juice. |
| use | dimethyl dicarbonate can be used in carbonated beverages, aerated or non-aerated fruit juice beverages, tea beverages, isobaric beverages and many other beverages. In Europe, the United States and some other countries, dimethyl dicarbonate is approved for widespread use in various beverages. The World Health Organization's Joint Expert Committee on Food Additives, the European Food Science Committee and the United States Food and Drug Administration-some important authorities have issued documents proving the safety of dimethyl = carbonate applications. Yeast inhibitor; preservative. |
| application field | cold sterilization of the following types of beverages: fruity beverages, high-energy beverages (with or without carbon dioxide), tea beverages (with or without carbon dioxide), fruit juice beverages (with or without carbon dioxide, fruit juice content to 100%) |
| content analysis | 1mol/L di-butylamine take 12.93g di-butylamine into a 100ml volumetric flask, fix the volume with toluene and mix well. The operation accurately weighed about 2g of the sample and moved it into a 250ml beaker to dissolve in 100ml of acetone. Add 1mol/L di-n-butylamine 25ml with a pipette. Let stand for 5min. Titration with 1mol/L hydrochloric acid, the end point was determined by potentiometer. At the same time, blank titration is performed and necessary correction is made. The acid content of dimethyl diphosphate in the sample is calculated according to the following formula: 100(B-A)0.134/W, where B and A are the volume of hydrochloric acid consumed during titration of blank sample and sample respectively, ml;0.134 is the molar mass of dimethyl dicarbonate; W is the sample mass, mg. |
| toxicity | has corrosive effect on eyes and skin, directly inhaled or ingested toxic. Allowed to use (can be used as a cold fungicide for beverages under GMP conditions, with a maximum concentration of 250mg/L;FAO/WHO,2001). |
| use limit | FDA,§ 172.133,2000): wine, alcohol-free or low-alcohol wine, 200 mg/kg. |
| category | toxic substances |
| toxicity classification | highly toxic |
| acute toxicity | oral-rat LD50: 260 mg/kg; Oral-mouse LD50: 589 mg/kg |
| flammability hazard characteristics | flammability; thermal decomposition of toxic and spicy stimulating gas |
| storage and transportation characteristics | warehouse ventilation and low temperature drying; separate from food raw materials storage and transportation |
| fire extinguishing agent | water, sand, dry powder, foam |
| spontaneous combustion temperature | 465°C |
| toxic substance data | information provided by: pubchem.ncbi.nlm.nih.gov (external link) |
Last Update：2024-04-09 20:49:11
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