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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For Use With (Application)
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136
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136
Buffer, Reference Standard, pH 4.00 ± 0.01 at 25°C, Ricca Chemical
SureTRACE
Supports traceability with guaranteed access to certificates and proactive change notifications.
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SureTRACE
Supports traceability with guaranteed access to certificates and proactive change notifications.
Learn More
Supports traceability with guaranteed access to certificates and proactive change notifications.
Learn More
| Name Note | pH 4.00 ± 0.01 at 25 deg C |
|---|---|
| CAS | 7732-18-5 |
| For Use With (Equipment) | pH Meter and Electrode |
| Physical Form | Liquid |
| pH | 4 |
| CAS Min % | 0.99 |
| Chemical Name or Material | Buffer, Reference Standard |
| Concentration | 1X |
| For Use With (Application) | Calibration |
| Solution Type | pH Buffer |
| CAS Max % | 1.03 |
137
| CAS | 7732-18-5 |
|---|---|
| Color | Colorless |
| Packaging | Plastic bottle |
| Physical Form | Liquid |
| pH | 9.98 to 10.02 (20°C) |
| Health Hazard 1 | |
| Chemical Name or Material | Buffer solution pH 10 |
138
| 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 | MFCD00134130 |
| Color | Yellow |
| 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 |
139
Thermo Scientific Chemicals Sodium borate, 0.5M buffer soln., pH 9.0
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 |
140
| Name Note | pH 7.40± 0.01 at 25°C |
|---|---|
| CAS | 7732-18-5 |
| For Use With (Equipment) | pH Meter and Electrode |
| Color | Colorless |
| Physical Form | Liquid |
| pH | 7.4 |
| CAS Min % | 0.28 |
| Chemical Name or Material | Buffer, Reference Standard |
| Concentration | 1X |
| For Use With (Application) | Calibration |
| Solution Type | pH Buffer |
| CAS Max % | 0.29 |
141
| Absorbance | Pass Test |
|---|---|
| Name Note | Color-coded Red |
| pH | 3.99 to 4.01 |
| Chemical Name or Material | Buffer solution, pH 4.00 |
| Grade | Certified |
| Identification | Pass Test |
142
| Linear Formula | HO2CCO2H |
|---|---|
| Color | Colorless |
| Traceability to NIST | Traceable to NIST |
| Physical Form | Liquid |
| Chemical Name or Material | Buffer Solution pH 1.68 at 25°C |
| Grade | Certified |
| Identification | Passes Test |
| Density | 1g/mL |
| CAS | 1310-58-3 |
| Decomposition Information | Potassium oxide; Carbon monoxide; Carbon dioxide; Thermal decomposition generates: Corrosive vapors |
| Health Hazard 2 | GHS H Statement Causes severe skin burns and eye damage. |
| Solubility Information | Soluble in water |
| Packaging | Poly Bottle |
| pH | 1.68 ±0.01 |
| Health Hazard 1 | Danger |
| Recommended Storage | Room Temperature |
| Formula Weight | 90.04 |
| Specific Gravity | 1g/mL |
| CAS Max % | 0.19 |
143
Buffer solution, pH 1.00 (+/-0.026 @ 25oC), No Color, Specpure, NIST Traceable
For Calibration of pH Meters | CAS: 7447-40-7
| Concentration or Composition (by Analyte or Components) | Potassium chloride: 0.7%; Hydrochloric acid: 0.7%; water: 98.6% |
|---|---|
| CAS | 7732-18-5 |
| Health Hazard 3 | P234-P390 |
| MDL Number | MFCD00146252 |
| Color | Colorless |
| Physical Form | Liquid |
| Health Hazard 1 | H290 |
| Chemical Name or Material | Buffer solution |
| TSCA | Yes |
| Recommended Storage | Ambient temperatures |
| Density | 1.005 |
| Vapor Pressure | 23 hPa (17mm Hg) at 20°C |
144
| MDL Number | MFCD00146206 |
|---|---|
| Solubility Information | Soluble in water (121mg/ml at 20°C). |
| Physical Form | Liquid |
| pH | 8.5 |
| Chemical Name or Material | Sodium phosphate buffer soln. |
| TSCA | Yes |
| Recommended Storage | Ambient temperatures |
| Concentration | 0.2 M |
145
| Linear Formula | Na2HPO4 |
|---|---|
| Color | Colorless |
| Traceability to NIST | Traceable to NIST |
| Physical Form | Liquid |
| Chemical Name or Material | Buffer Solution pH 12.0 at 25°C |
| Grade | Certified |
| Identification | Passes Test |
| Density | 1g/mL |
| CAS | 1310-73-2 |
| Decomposition Information | Phosphine; Phosphorus oxides; Phosgene; Thermal decomposition generates: Corrosive vapors |
| Solubility Information | Soluble in water |
| Packaging | Poly Bottle |
| pH | 12.00 ±0.05 |
| Recommended Storage | Room Temperature |
| Formula Weight | 141.96 |
| Specific Gravity | 1g/mL |
| CAS Max % | 0.07 |
146
| Name Note | McIlvaine, pH 3.20 |
|---|---|
| CAS | 7558-79-4 |
| Color | Colorless |
| Physical Form | Liquid |
| pH | 3.2 |
| CAS Min % | 0.03 |
| Chemical Name or Material | Citric/Phosphate Buffer |
| Grade | Laboratory |
| Concentration | 1X |
| For Use With (Application) | Water Analysis |
| Solution Type | Buffer |
| CAS Max % | 0.03 |
147
| MDL Number | MFCD00146206 |
|---|---|
| Solubility Information | Miscible with water. Immiscible with alcohol. |
| Physical Form | Liquid |
| pH | 7.5 |
| Chemical Name or Material | Sodium phosphate buffer soln. |
| TSCA | Yes |
| Recommended Storage | Ambient temperatures |
| Concentration | 0.2 M |
148
| CAS | 7487-94-7 |
|---|---|
| MDL Number | MFCD00217672 |
| Solubility Information | Solubility in water: miscible. |
| Physical Form | Liquid |
| Chemical Name or Material | Buffer solution pH 4 |
| Concentration | 1.0% (Potassium hydrogen phthalate) |
| Molecular Formula | C8H5KO4 |
| Formula Weight | 204.22 |
149
| CAS | 7732-18-5 |
|---|
150
Buffer solution, pH 2.00 (+/-0.026 @ 25oC), No Color, Specpure, NIST Traceable
For Calibration of pH Meters | CAS: 7447-40-7
| Color | Colorless |
|---|---|
| Traceability to NIST | Yes |
| Physical Form | Liquid |
| Chemical Name or Material | Buffer solution |
| Vapor Pressure | 23 hPa (17mm Hg) at 20°C |
| Concentration or Composition (by Analyte or Components) | Potassium chloride: 0.7%; Hydrochloric acid: 0.7%; water: 98.6% |
| CAS | 7732-18-5 |
| Health Hazard 3 | P234-P390 |
| MDL Number | MFCD00146252 |
| Health Hazard 2 | In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. Wear suitable gloves and eye/face protection. This material and/or its container must be disposed of as hazardous waste. |
| Solubility Information | Soluble in water. |
| Health Hazard 1 | H290 |
| TSCA | Yes |
| Recommended Storage | Ambient temperatures |