Electrochemistry Buffers
Buffer solutions suitable for use as reference and calibration standards for measuring pH values.
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Physical Form
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pH
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Solution Type
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For Use With (Application)
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91
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105
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91
| Concentration or Composition (by Analyte or Components) | Sodium hydroxide: 0.7%; Potassium dihydrogen phosphate: 0.7%; water: 98.6% |
|---|---|
| CAS | 7732-18-5 |
| MDL Number | MFCD00146206 |
| Color | Red |
| Solubility Information | Miscible with water. |
| Physical Form | Liquid |
| Chemical Name or Material | Buffer solution |
| TSCA | Yes |
| Recommended Storage | Ambient temperatures |
| Vapor Pressure | 23 hPa (17mm Hg) at 20°C |
92
Thermo Scientific Chemicals Sodium borate, 0.5M buffer soln., pH 8.5
CAS: 1330-43-4 Molecular Formula: B4Na2O7 Molecular Weight (g/mol): 201.21 MDL Number: MFCD00081185 InChI Key: NXSVMNYRVBQCMO-UHFFFAOYSA-N IUPAC Name: disodium bicyclo[3.3.1]tetraboroxane-3,7-bis(ylium)-1,5-diuide-1,5-bis(olate) SMILES: [Na+].[Na+].[O-][B-]12O[B+]O[B-]([O-])(O[B+]O1)O2
| CAS | 1330-43-4 |
|---|---|
| Molecular Weight (g/mol) | 201.21 |
| MDL Number | MFCD00081185 |
| SMILES | [Na+].[Na+].[O-][B-]12O[B+]O[B-]([O-])(O[B+]O1)O2 |
| IUPAC Name | disodium bicyclo[3.3.1]tetraboroxane-3,7-bis(ylium)-1,5-diuide-1,5-bis(olate) |
| InChI Key | NXSVMNYRVBQCMO-UHFFFAOYSA-N |
| Molecular Formula | B4Na2O7 |
93
Thermo Scientific Chemicals Citrate Buffer, 0.2M buffer soln., pH 4.0, low endotoxin
CAS: 6132-04-3 | C6H9Na3O9 | 294.10 g/mol
| Storage Note 1 | 2° to 8°C |
|---|---|
| Molecular Weight (g/mol) | 294.10 |
| Color | Colorless |
| Physical Form | Liquid |
| Chemical Name or Material | Citrate Buffer |
| Concentration | 0.2 M |
| InChI Key | NLJMYIDDQXHKNR-UHFFFAOYSA-K |
| Name Note | low endotoxin |
| CAS | 4-3-6132 |
| MDL Number | MFCD00150031 |
| pH | 4.0 |
| TSCA | Yes |
| Recommended Storage | Keep cold |
| Molecular Formula | C6H9Na3O9 |
94
| MDL Number | MFCD00146206 |
|---|---|
| Solubility Information | Soluble in water (121mg/ml at 20°C). |
| Physical Form | Liquid |
| pH | 7.5 |
| Chemical Name or Material | Sodium phosphate buffer soln. |
| TSCA | Yes |
| Recommended Storage | Ambient temperatures |
| Concentration | 0.5 M |
95
Sodium bicarbonate, 1M buffer soln., pH 8.0, Thermo Scientific Chemicals
CAS: 144-55-8 Molecular Formula: CHNaO3 Molecular Weight (g/mol): 84.01 MDL Number: MFCD00003528 InChI Key: UIIMBOGNXHQVGW-UHFFFAOYSA-M PubChem CID: 516892 ChEBI: CHEBI:32139 SMILES: [Na+].OC([O-])=O
| PubChem CID | 516892 |
|---|---|
| CAS | 144-55-8 |
| Molecular Weight (g/mol) | 84.01 |
| ChEBI | CHEBI:32139 |
| MDL Number | MFCD00003528 |
| SMILES | [Na+].OC([O-])=O |
| InChI Key | UIIMBOGNXHQVGW-UHFFFAOYSA-M |
| Molecular Formula | CHNaO3 |
96
Thermo Scientific Chemicals Borate, 0.5M buffer soln., pH 8.5
CAS: 1330-43-4 Molecular Formula: B4Na2O7 Molecular Weight (g/mol): 201.21 MDL Number: MFCD00081185 InChI Key: NXSVMNYRVBQCMO-UHFFFAOYSA-N IUPAC Name: disodium bicyclo[3.3.1]tetraboroxane-3,7-bis(ylium)-1,5-diuide-1,5-bis(olate) SMILES: [Na+].[Na+].[O-][B-]12O[B+]O[B-]([O-])(O[B+]O1)O2
| CAS | 1330-43-4 |
|---|---|
| Molecular Weight (g/mol) | 201.21 |
| MDL Number | MFCD00081185 |
| SMILES | [Na+].[Na+].[O-][B-]12O[B+]O[B-]([O-])(O[B+]O1)O2 |
| IUPAC Name | disodium bicyclo[3.3.1]tetraboroxane-3,7-bis(ylium)-1,5-diuide-1,5-bis(olate) |
| InChI Key | NXSVMNYRVBQCMO-UHFFFAOYSA-N |
| Molecular Formula | B4Na2O7 |
97
Buffer solution pH 4.01 (+/-0.022 @ 25oC) No Color Specpure NIST Traceable
CAS: 1336-21-6 | H5NO | 35.05 g/mol
| Molecular Weight (g/mol) | 35.05 |
|---|---|
| ChEBI | CHEBI:18219 |
| Color | Colorless |
| Physical Form | Liquid |
| Chemical Name or Material | Buffer solution |
| SMILES | N.O |
| InChI Key | VHUUQVKOLVNVRT-UHFFFAOYSA-N |
| Vapor Pressure | 23 hPa (17mm Hg) at 20°C |
| PubChem CID | 14923 |
| MDL Number | MFCD00066650 |
| Solubility Information | Miscible with water. |
| TSCA | Yes |
| Recommended Storage | Ambient temperatures |
| IUPAC Name | azanium;hydroxide |
| Molecular Formula | H5NO |
| Odor | Odorless |
98
| Name Note | Phosphate buffer, traceable to NIST, ready to use |
|---|---|
| CAS | 7647-14-5 |
| MDL Number | MFCD03097944 |
| Solubility Information | Solubility in water: miscible. |
| Chemical Name or Material | Buffer solution pH 7 |
| Density | 1.0000g/mL |
| Specific Gravity | 1 |
99
Promotions Available
Buffer Solution, TISAB, Fisher Chemical™
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Buffer Solution, TISAB, Fisher Chemical™
For Analysis of the Determination of Fluoride Ion Concentration by Fluoride Ion Electrode
| Name Note | Total Ionic Strength Adjustment Buffer |
|---|---|
| CAS | 52-51-7 |
| Health Hazard 3 | Emergency Overview May cause eye, skin, and respiratory tract irritation. Use personal protective equipment. Ensure adequate ventilation. Wash off immediately with plenty of water for at least 15 minutes. Get medical attention immediately if symptoms occur. Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. Obtain medical attention. Move to fresh air. If breathing is difficult, give oxygen. Get medical attention immediately if symptoms occur. Do not induce vomiting. Obtain medical attention. Obtain medical attention. . NFPA Health:1 Flammability:0 Instability:0 |
| MDL Number | MFCD00146206 |
| Health Hazard 2 | CAUTION! |
| Color | Undesignated |
| Physical Form | Liquid |
| pH | 5.5 |
| Chemical Name or Material | Buffer Solution, TISAB |
| Identification | Pass Test |
| ChemAlert Storage Symbol | Gray |
100
101
Promotions Available
Buffer Solution, pH 8.00 (Certified), Fisher Chemical™
![]()
Buffer Solution, pH 8.00 (Certified), Fisher Chemical™
Potassium Phosphate Monobasic/Sodium Hydroxide
| CAS | 7732-18-5 |
|---|---|
| Health Hazard 3 | Emergency Overview Irritating to eyes and skin. The toxicological properties have not been fully investigated. Use personal protective equipment. Ensure adequate ventilation. Wash off immediately with plenty of water for at least 15 minutes. Obtain medical attention. Rinse immediately with plenty of water, also under the eyelids, for at least 15 minutes. Obtain medical attention. Move to fresh air. If breathing is difficult, give oxygen. Get medical attention immediately if symptoms occur. Do not induce vomiting. Do not induce vomiting. Obtain medical attention. NFPA Health:2 Flammability:0 Instability:0 |
| MDL Number | MFCD00147253 |
| Health Hazard 2 | WARNING! |
| Traceability to NIST | Traceable to NIST. |
| Physical Form | Liquid |
| pH | 8.0 |
| Chemical Name or Material | Buffer Solution, pH 8.00 |
| Grade | Certified |
| Identification | Pass Test |
| ChemAlert Storage Symbol | Gray |
103
| Description | TISAB II for Fluoride Electrode |
|---|---|
| For Use With (Equipment) | Ion Selective Electrode |
| Packaging | Gallon |
| Chemical Name or Material | Ion Selective Electrode Reagents |
| For Use With (Application) | Ionic strength adjustors used for analysis with ion selective electrodes and special reagents used with some ion selective electrodes |
| Solution Type | Ionic Strength Adjustor |
104
| Boiling Point | 100°C |
|---|---|
| CAS | 7732-18-5 |
| MDL Number | MFCD00146206 |
| Traceability to NIST | Traceable to NIST. |
| Packaging | Poly Bottle |
| Physical Form | Liquid |
| pH | 5.0 |
| Chemical Name or Material | Buffer Solution, pH 5.00 |
| Grade | Certified |
| Identification | Pass Test |
| ChemAlert Storage Symbol | Gray |
| Melting Point | 0°C |
