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71-52-3

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71-52-3 Usage

Definition

ChEBI: The carbon oxoanion resulting from the removal of a proton from carbonic acid.

Check Digit Verification of cas no

The CAS Registry Mumber 71-52-3 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 7 and 1 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 71-52:
(4*7)+(3*1)+(2*5)+(1*2)=43
43 % 10 = 3
So 71-52-3 is a valid CAS Registry Number.

71-52-3SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name hydrogencarbonate

1.2 Other means of identification

Product number -
Other names Hydrocarbonate(1-)

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:71-52-3 SDS

71-52-3Relevant articles and documents

Thermodynamics and equilibrium solubility of carbon dioxide in diglycolamine/morpholine/water

Al-Juaied, Mohammed,Rochelle, Gary T.

, p. 708 - 717 (2007/10/03)

Carbon dioxide solubility was studied in 3.5 m (23.5 wt %) morpholine (MOR), 17.7 m (65 wt %) 2-aminoethoxyethanol (diglycolamine or DGA), and 3.6 m MOR + 14.7 m DCA (11 wt % MOR + 53 wt % DGA). CO2 solubility was determined by dynamic measurements with a wetted wall contactor. Carbamate and bicarbonate concentrations were determined by 13C NMR in solutions loaded with 13CO2. The data are represented by the electrolyte NRTL model. At a given CO2 loading (mol/mol amine), the CO2 vapor pressure over 3.5 m MOR is 10 to 1000 times greater than 17.7 m DGA. In 3.6 m MOR + 14.7 m DGA, the CO2 vapor pressure is 5 to 7 times greater than in 17.7 m DGA at high CO2 loading, but the same below 0.2 loading. MOR carbamate is less stable than DGA carbamate by a factor of 7 to 10 from (300 to 333) K. The model predicts that MOR vapor pressure is 100 times greater than DGA over 3.6 m MOR + 14.7 m DGA from (313 to 333) K. The heat of CO2 absorption in the blend is equivalent to 17.7 m DGA up to 0.35 loading but is 40 % lower at 0.5 loading. The working capacity of the blend is 17 % less than 17.7 m DGA.

Cage-Escape of Geminate Radical Pairs Can Produce Peroxynitrate from Peroxynitrite under a Wide Variety of Experimental Conditions

Hodges, George R.,Ingold

, p. 10695 - 10701 (2007/10/03)

The spontaneous and CO2-catalyzed decomposition of peroxynitrite yields HO? and -CO3? radicals, respectively, together with ?NO2. The geminate HOVNO2 and -CO3?/?NO2 pairs undergo competitive in-cage collapse to nitrate and diffusive separation. Free HO? and -CO3? radicals react with H2O2 and, in the presence of O2, suitable alcohols or formate to produce superoxide, which is trapped by the ?NO2 to form peroxynitrate. The formation of peroxynitrate may influence the rate of change in optical density at 302 nm, the wavelength normally employed to monitor peroxynitrite decay, leading to misleading kinetic traces. Tetranitromethane (TNM) was used as a colorimetric probe for superoxide to quantify the yield of free HO? (27-28%) and free -CO3? (32-33%). The yields of both of these free radicals are in excellent agreement with other recent estimates. Superoxide was also detected in some oxygenated aldehyde-catalyzed peroxynitrite decompositions both by peroxynitrate formation and by its reaction with TNM. Superoxide yields, measured with TNM, were aldehyde (RCHO) dependent (R = -O2CC6H4, CH3, CH3CH2, (CH3)3C and HOCH2CHOH; yields were 15, 9, 0.8, 0, and 30%, respectively).

Oxygenation by Superoxide Ion of 1,2-Dibromo-1,2-diphenylethane, 2,3-Dibromobutane, Ethylene Dibromide (EDB), and 1,2-Dibromo-3-chloropropane (DBCP)

Calderwood, Thomas S.,Sawyer, Donald T.

, p. 7185 - 7186 (2007/10/02)

In dimethylformamide (DMF) superoxide ion (O2-.) reacts with PhCHBrCHBrPh, MeCHBrCHBrMe, and CH2BrCH2Br (EDB) via 2:1 stoichiometry to produce PhCH(O), MeCH(O), and CH2(O), respectively.A similar oxygenation occurs when O2-. and CH2BrCHBrCH2Cl (DBCP) are combined in 5:1 stoichiometry to yield two CH2(O) and one HOC(O)O- per substrate.The relative rates of reaction are in the order CH2BrCH2 > PhCHBrCHBrPh > MeCHBrCHBrMe.On the basis of the reaction rates and the products, the initial step for each substrate is believed to be a nucleophilic attack on a bromo carbon (R2CHBr) with displacement of Br- and formation of R2CHOO..Subsequent steps involve reduction by a second O2-. and a dioxetane closing on an adjacent C-X group.

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