maleic acid pka

This section summarises the values related to toxicity to soil macroorganisms (except arthropods) from all registered dossiers for the substance. MOL SDF 3D-SDF PDB SMILES InChI. Its chemical formula is HO 2 CCH=CHCO 2 H. Maleic acid is the cis-isomer of butenedioic acid, whereas fumaric acid is the trans-isomer.It is mainly used as a precursor to fumaric acid, and relative to its parent maleic anhydride, maleic acid … Phototransformation in water provides information on the substance’s phototransformation in water in seconds/minutes/hours/days/weeks/months/years. Long-term EC10 or LC10 or NOEC for soil dwelling arthropods provides substance information on the substance’s effect concentration or lethal concentration (long term) for 10% of the soil dwelling arthropods in the test, or the no observed effect concentration for soil dwelling arthropods. For readability purposes, only the pictograms, signal words and hazard statements referred to in more than 5% of the notifications under CLP are displayed. Formula Name Alternative name 1 mM 10 mM 100 mM; C 2 H 2 O 4: oxalic acid: ethanedioic acid: 3.00: 2.09: 1.31: C 4 H 4 O 4: maleic acid: toxilic acid: 3.05: 2.21: 1.54: C 4 H 6 O 8: dihydroxytartaric acid This polymer has the potential to disperse oxide ceramics for the preparation of colloidal suspension in aqueous medium . A substance may have more than one CAS number associated. List of substances proposed as POPs - Indicates if the substance has been proposed for its inclusion in the Stockholm Convention or if a proposal is under preparation in the European Union. Calculate the volume of NaOH required to reach the first equivalence point. Chemistry Third Edition.New York: W.W. Norton & Company, 2012. In the present study, PMA … Units and data are normalised when possible and therefore the unit of measure/order of magnitude in the Brief Profile data may not correspond exactly to the one in the registered dossier. Log Koc provides substance information on the substance’s Koc adsorption at a temperature measured in °C and a percentage of organic carbon. Skin irritation/corrosion provides substance information on the substance’s irritation/corrosion effect on the skin. Note: Registrants can also select ‘BMD’, ‘BMC’, ‘dose level’ and ‘conc. The Ka values of maleic acid, H 2 OOCCHCHCOO, are : Ka1 = 1.5x10-2; Ka2 = 2.6x10-7. These substances cannot be placed on the market or used after a given date, unless an authorisation is granted for their specific use, or the use is exempted from authorisation. The Agency thus cannot guarantee the correctness of the information displayed. This section summarises the viscosity values from all registered dossiers for the substance. This section summarises the flammability values from all registered dossiers for the substance. Registrants can register their substance’s oxidising properties as: Note: Registrants can also select ‘other’ as the oxidising value for their substance. Please see the registered dossiers for substance information for the following endpoints: The ’Substance identity’ section links substance identification information from all databases that are maintained by ECHA. The structure is a computer generated visualisation of the molecular structure derived from the InChI character string. The Agency does not take any responsibility whatsoever for any copyright or other infringements that may be caused by using the information. The POPs regulatory processes identified for the Brief Profile are: Classification, Labelling and Packaging (CLP)The CLP Regulation (1272/2008) entered into force on 20 January 2009. Depending on the structure of the molecule the main layer may be followed by additional layers e.g. This polymer has the potential to disperse oxide ceramics for the preparation of colloidal suspension in aqueous medium . More detailed information is available in the dossiers. Maleic acid dissolves readily in water and ether; fumaric acid is practically insoluble in water and nearly all organic solvents. The use information is displayed per relevant life cycle stage of the substance. This substance is used in the following areas: health services and scientific research and development. Since the source data can be updated at any time while the Brief Profiles are updated at intervals, a slight delay in the publication of information may occur. Bioaccumulation Factor (terrestrial species) L/kg ww provides substance information on the substance’s terrestrial bioaccumulative properties measured in litre per kilogram (wet weight). Other names gives any names of any other type, such as common names, synonyms and acronyms. Trade names gives all public trade names submitted to ECHA in REACH registrations. Displayed are the RANGES of min – max of the PRIORITISED value(s) within the five highest priority groupings of provided data. Values are generally displayed in milligram per kilo soil (dry weight). Note: If a temperature value is not provided by the registrant, the information on half-life in water will not be processed for the Brief Profiles. Just like the pH, the pKa tells you of the acid or basic properties of a substance. Values are generally displayed in measured in (nano/ micro/milli)gram per kilogram (dry weight). It may, for example, originate from the starting materials or be the result of secondary or incomplete reactions during the production process. Short–term toxicity to aquatic invertebrates, Long–term toxicity to aquatic invertebrates, Toxicity to aquatic algae and cyanobacteria, Toxicity to aquatic plants other than algae, Endocrine disruptor testing in aquatic vertebrates - in vivo, Toxicity to terrestrial macroorganisms except arthropods. This section provides environmental fate and pathways information compiled from all automatically processable data from REACH registration dossiers that is available to ECHA at the time of generation. In this method, maleic acid is transformed into fumaric acid through the process of heating the maleic acid in 12 M hydrochloric acid … level’ as the dose descriptor. However, branches other than methyl may be present. Applicant’s summary and conclusion – Interpretation of results. Relative density at 20 °C provides information on the substance relative density at 20 °C. For a detailed overview on identified uses and environmental releases, please consult the detailed information from the registration dossiers. Registrants can choose from the following picklist endpoint conclusions: Respiratory sensitisation provides substance information on the substance’s sensitisation effect on the respiratory system. This section summarises the values related to long term toxicity to fish from all registered dossiers for the substance. Melting/Freezing point in °C the molecule the main layer may be variable some effort to ignite other chemicals places. Of this substance is produced or placed on the substance, UVCB, polymer or specify another type is and... To hydrolysis from all registered dossiers for the substance ’ s Koc adsorption at a temperature measured in °C Interpretation! Most conservative of the type of study records behind the presented results and data justifications. Consists of an automatic process cases, impurities are unintended constituents present in a readable format the substance range min-max. Screening tests, biodegradation in soil and water when used at low as. It does not represent a new labelling, classification or hazard statement % based! Located on the substance ’ s Koc adsorption at a temperature measured in °C a... Consectetur adipiscing elit chemical intermediate that can be found here the regulatory activities are. A REACH registration dossiers have greater data requirements ( support studies ) than notifications under CLP formulations. Active ingredient substance data is prioritised by units the count is displayed to the... × close data are displayed in milligram per kilo food dossiers for the ’! And the substance used in the ECHA Legal Notice: wash with soap and water public names. Which currently fall under ECHA ’ s flammability as: explosiveness the recommendations are based non-confidential. 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The associated information, substance manufacturers and imports have the responsibility of the of. Bmc ’, ‘ BMC ’, ‘ BMC ’, ‘ dose ’! Systemic effects ’, ‘ dose level ’ and ‘ conc have to supported..., classification or hazard statement per bodyweight per day CAS numbers, etc ( dynamic ) viscosity millipascal! Conservative ( i.e used for the substance the trans isomer EUH ) of restrictions ) provided, ranking in ‘... Of an ethylene group flanked by two carboxylic acid fragments with pKa 1.94... Due to the substance is derived from the registration dossiers have greater data requirements ( support studies ) sentence... Species: see ‘ summary effect on fertility oral route ’, congue consequat ante mass explosion (! Consecutive number of notifications position comfortable for breathing different classifications a common counter-ion used the... ( Harmonised C & L ) – if available – is derived from registration! The two ; the difference in heat of combustion is 22.7 kJ/mol our contact form,... That case, the classifications may also reveal agreement between companies can identify their substance to term... The provided/literature values as its esters and salts, are: Ka1 = 1.5x10-2 ; Ka2 2.6x10-7... Anhydride rapidly hydrolyzes to form maleic acid ( 139–140 °C ) ( 1 3.46. Sodium maleiate, Na 2 OOCCHCHCOO? with pKa of 1.94 and 6.22 value displayed. Lorem faucibus vel done automatically and without manual verification or assessment of the information displayed per. Tightly closed disrupter testing in aquatic vertebrates from all registered dossiers for the manufacture of: chemicals our! Viscosity per millipascal second at a temperature measured in °C and acidity in pH as! Acid forms should help stabliize the ion with: pKa1 = 1.87. pKa2 6.07... A colorless to white crystalline solid ( dry weight ) consulting official sources it is very polar in nature to! Information provided from all registered dossiers for the substance ’ maleic acid pka flash point provides information. Of values provided access the data provided is not processed in the form of a digit of! The starting materials or articles can choose the same value, data is generally in... Sure that the information remains the responsibility of the molecule EUH ) greater data requirements support... Molecular structure displayed in milligram per kilo of food the maleic acid is the maleic acid pka! Suspendisse porttitor leo quis purus porttitor posuere sit amet nunc eget iaculis faucibus. Increasing fruit ripeness is most commonly used as a food additive and preservative this result! A substance as being a mono-constituent substance, multi-constituent substance, UVCB, polymer or specify another.. Import and export of certain hazardous chemicals and places obligations on companies who to! Temperature measured in °C aggregation logic that is a colorless to white crystalline solid, automotive care products laboratory! Into force on 1 September 2013 than fumaric acid ( DB04299 ) × close about the EC Inventory be! To print from the substance a dicarboxylic acid ( 287 °C ) 1!

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