Buffers and Standards

Hydrogen ion buffers comprising a mixture of a weak acid and its conjugate base or vice-versa and used to stabilize pH; also diluents, washing solutions, and standard-value solutions used for a broad array of scientific calibration purposes.

The buffers used to calibrate pH meters may be certified and/or traceable to the National Institute of Standards and Technology (NIST). These buffers may also be color-coded for easy identification:

Red: pH 4.0
Yellow: pH 7.0
Blue: pH 10.0

Chromatography Standards (22,730)

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Life Science Buffers (3,956)

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Gel Filtration Standards (58)

Matrix Modifiers (29)

Osmolality Standards (13)

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AAS (55)
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Molecular Weight (g/mol)

0.00 (1)
10.81 (14)
100.09 (33)
100.117 g/mol (1)
100.12 (1)
100.121 (1)
100.15 (1)

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Quantity

0.1 mL (1)
0.1 mol (1)
0.5 L (1)
0.5 mL (15)
0.5 mol (1)
1 Bottle (5)
1 Box (1)

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Percent Purity

≥14% (BF3) (1)
≥30% (RT) (1)
≥30% (titration) (1)
≥35% (RT) (1)
≥40% (3)
≥49% (2)
≥50% (3)

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pH

≥12 to ≤14 (6)
>11.5 (2)
>12 (44)
>13 (100)
>8 (1)
<0.5 (3)
<1 (99)

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Solvent or Matrix

#2 Diesel Fuel (12)
10% HCl (19)
10% HCl/1% HNO₃ (1)
10% HNO3 (13)
15% HCl (3)
15% HNO₃ (2)
2% HCl (29)

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Concentration

≈0.000027 M (3)
≈0.0035 M (3)
≥30% (1)
≤0.1% in nitric acid (1)
≤2.5% KCl (T) (8)
0.00017 M (3)
0.001 M KCl (1)

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Physical Form

Aqueous Solution (30)
Capsule (11)
Chemvelope (1)
Clear Liquid (1)
Clear Liquid at 20°C (2)
Colorless Liquid (1)
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Technique

AA (471)
Acidimetry (3)
Calibrating the absorbance of spectrophotometers (1)
Calibration (7)
Calibration and Matrix Spikes (1)
Calibration and Verification (16)
Calibration and Verification of Kinematic and Dynamic Viscosity Test (15)

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Solution Type

Antigen Retrieval Reagent (1)
Aqueous (2)
Buffer (375)
Buffer, Storage (2)
Calibration (8)
Cleaning (1)
Colored pH Buffer (35)

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Search Within Results

691 – 705 of 43,322 results

691

Thermo Scientific Chemicals MES, 0.5M buffer soln., pH 5.5

CAS: 145224-94-8 Molecular Formula: C6H15NO5S Molecular Weight (g/mol): 213.248 MDL Number: MFCD00283848 InChI Key: MIIIXQJBDGSIKL-UHFFFAOYSA-N PubChem CID: 16218417 IUPAC Name: 2-morpholin-4-ylethanesulfonic acid;hydrate SMILES: C1COCCN1CCS(=O)(=O)O.O

Pricing & Availability
Specifications

PubChem CID	16218417
CAS	145224-94-8
Molecular Weight (g/mol)	213.248
MDL Number	MFCD00283848
SMILES	C1COCCN1CCS(=O)(=O)O.O
IUPAC Name	2-morpholin-4-ylethanesulfonic acid;hydrate
InChI Key	MIIIXQJBDGSIKL-UHFFFAOYSA-N
Molecular Formula	C6H15NO5S

692

Ricca Chemical Company Calcium Hydroxide TS (Saturated Aqueous Solution), Ricca Chemical

CAS: 1305-62-0 Molecular Formula: CaH2O2 Molecular Weight (g/mol): 74.09 MDL Number: MFCD00010901 InChI Key: AXCZMVOFGPJBDE-UHFFFAOYSA-L Synonym: calcium hydroxide,slaked lime,hydrated lime,calcium dihydroxide,calcium ii hydroxide,calcium oxide, hydrated,kalziumhydroxid,loeschkalk,pickling lime,calciumdihydroxid PubChem CID: 6093208 ChEBI: CHEBI:31341 IUPAC Name: calcium dihydroxide SMILES: [OH-].[OH-].[Ca++]

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Specifications

PubChem CID	6093208
CAS	1305-62-0
Molecular Weight (g/mol)	74.09
ChEBI	CHEBI:31341
MDL Number	MFCD00010901
SMILES	[OH-].[OH-].[Ca++]
Synonym	calcium hydroxide,slaked lime,hydrated lime,calcium dihydroxide,calcium ii hydroxide,calcium oxide, hydrated,kalziumhydroxid,loeschkalk,pickling lime,calciumdihydroxid
IUPAC Name	calcium dihydroxide
InChI Key	AXCZMVOFGPJBDE-UHFFFAOYSA-L
Molecular Formula	CaH2O2

693

Thermo Scientific Chemicals Sodium bicarbonate, 1M buffer soln., pH 9.0

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 IUPAC Name: sodium;hydrogen carbonate SMILES: [Na+].OC([O-])=O

Pricing & Availability
Specifications

PubChem CID	516892
CAS	144-55-8
Molecular Weight (g/mol)	84.01
ChEBI	CHEBI:32139
MDL Number	MFCD00003528
SMILES	[Na+].OC([O-])=O
IUPAC Name	sodium;hydrogen carbonate
InChI Key	UIIMBOGNXHQVGW-UHFFFAOYSA-M
Molecular Formula	CHNaO3

694

Sodium bis(trimethylsilyl)amide, pure, 2M solution in THF, AcroSeal™

CAS: 1070-89-9 | C6H18NNaSi2 | 183.377 g/mol

Pricing & Availability
Specifications

Linear Formula	[(CH₃)₃Si]₂NNa
Molecular Weight (g/mol)	183.377
InChI Key	WRIKHQLVHPKCJU-UHFFFAOYSA-N
Density	0.9160g/mL
PubChem CID	2724254
Name Note	2M Solution in THF
Percent Purity	38 to 42%
Fieser	01,1046; 03,261; 04,442; 06,529; 12,441; 16,307
Formula Weight	183.38
Color	Orange to Brown
Physical Form	Liquid
Chemical Name or Material	Sodium bis(trimethylsilyl)amide
Grade	Pure
SMILES	C[Si](C)(C)[N-][Si](C)(C)C.[Na+]
CAS	109-99-9
Health Hazard 3	GHS P Statement IF SWALLOWED: rinse mouth. Do NOT induce vomiting. Wear eye protection/face protection. Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Immediately call a POISON CENTER or doctor/physician. Avoid breathing dust/fume/gas/mist/vapors/spray. Store in a dry place. Store in a closed container. Keep container tightly closed.
MDL Number	MFCD00009835
Health Hazard 2	GHS P Statement Causes severe skin burns and eye damage. May cause respiratory irritation. Highly flammable liquid and vapor. Suspected of causing cancer. Suspected of causing genetic defects. Harmful to aquatic life with long lasting effects. Reacts violently with water. May form explosive peroxides.
Flash Point	−21°C
Health Hazard 1	Danger
Synonym	sodium bis trimethylsilyl amide,n-sodiohexamethyldisilazane,sodium hexamethyldisilazide,nahmds,sodiobis trimethylsilyl amine,sodium bis trimethylsilyl azanide,n-sodium hexamethyldisilazane,sodium-bis trimethylsilyl amide,hexamethyldisilazane sodium salt
TSCA	TSCA
IUPAC Name	sodium;bis(trimethylsilyl)azanide
Molecular Formula	C6H18NNaSi2
EINECS Number	213-983-8
Specific Gravity	0.916

695

Fluoride Standard, 1 ppm F^- (Premixed with TISAB/Color Coded Green), Ricca Chemical

CAS: 7681-49-4 Molecular Formula: FNa Molecular Weight (g/mol): 41.99 MDL Number: MFCD00003524 InChI Key: PUZPDOWCWNUUKD-UHFFFAOYSA-M PubChem CID: 5235 ChEBI: CHEBI:28741 IUPAC Name: sodium fluoride SMILES: [F-].[Na+]

Pricing & Availability
Specifications

PubChem CID	5235
CAS	7681-49-4
Molecular Weight (g/mol)	41.99
ChEBI	CHEBI:28741
MDL Number	MFCD00003524
SMILES	[F-].[Na+]
IUPAC Name	sodium fluoride
InChI Key	PUZPDOWCWNUUKD-UHFFFAOYSA-M
Molecular Formula	FNa

696

Borane dimethyl sulfide complex, 2M solution in THF, AcroSeal™

CAS: 13292-87-0 | C2H9BS | 75.96 g/mol

Pricing & Availability
Specifications

Linear Formula	(CH₃)₂S·BH₃
Molecular Weight (g/mol)	75.96
InChI Key	RMHDLBZYPISZOI-UHFFFAOYSA-N
Density	0.8500g/mL
PubChem CID	9833925
Name Note	2M Solution in Tetrahydrofuran
Fieser	04,191; 05,47; 06,64; 08,49; 10,49; 14,52; 17,50
RTECS Number	PV5080000
Formula Weight	75.95
Color	Colorless to Yellow
Physical Form	Solution
Chemical Name or Material	Borane-methyl sulfide complex
SMILES	B.CSC
Merck Index	15, 1336
Concentration	1.80 to 2.20M
CAS	75-18-3
Health Hazard 3	GHS P Statement Keep away from heat/sparks/open flames/hot surfaces. - No smoking. IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. Handle under inert gas. Protect from moisture. Wear protective gloves/protective clothing/eye protection/face protection. If skin irritation occurs: Get medical advice/attention. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. Immediately call a POISON CENTER or doctor/physician.
MDL Number	MFCD00013189
Health Hazard 2	GHS H Statement May cause respiratory irritation. Causes skin irritation. Causes serious eye damage. Harmful if swallowed. In contact with water releases flammable gases which may ignite spontaneously. Highly flammable liquid and vapor. May form explosive peroxides. Reacts violently with water. Suspected of causing cancer. May cause drowsiness or dizziness.
Flash Point	−17°C
Solubility Information	Solubility in water: reacts. Other solubilities: soluble in ethyl ether, tetrahydrofurane, hexane,, toluene, methylene chloride and other aprotic, solvents
Health Hazard 1	Danger
Synonym	dimethyl sulfide borane,borane-methyl sulfide complex,borane dimethyl sulfide complex,borane-dimethyl sulfide,dimethyl sulfideborane,dimethyl sulfide trihydroboron,borane-dimethyl sulfide complex,borane methylsulfide,borane dimethylsulfide,borane dms
TSCA	TSCA
IUPAC Name	(methylsulfanyl)methane borane
Molecular Formula	C2H9BS
EINECS Number	236-313-6
Specific Gravity	0.85

697

Nitrite, Ion chromatography standard solution, Specpure™, NO2- 1000 μg/mL

MDL Number: MFCD00144923

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Specifications

MDL Number	MFCD00144923

698

Thermo Scientific Chemicals Sodium phosphate, 0.5M buffer soln., pH 7.0

Pricing & Availability
Specifications

MDL Number	MFCD00146206
Solubility Information	Fully miscible.
Physical Form	Liquid
pH	7.0
Chemical Name or Material	Sodium phosphate buffer soln.
TSCA	Yes
Recommended Storage	Ambient temperatures
Concentration	0.5 M

699

Color Standard, APHA/Hazen (Platinum-Cobalt), Color = 20, Ricca Chemical

Pricing & Availability
Specifications

Boiling Point	100°C
Physical Form	Liquid
Packaging	Amber Glass Bottle

700

LabChem, Inc. Buffer Solution pH 1.0 at 25°C, Certified, LabChem™

Pricing & Availability
Specifications

Linear Formula	KCl
Color	Colorless
Traceability to NIST	Traceable to NIST
Physical Form	Liquid
UN Number	UN1789
Chemical Name or Material	Buffer Solution pH 1.0 at 25°C
Grade	Certified
Identification	Passes Test
Density	1g/mL
CAS	7647-01-0
Decomposition Information	Chlorine; 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	1.00 ±0.02
Health Hazard 1	Danger
Recommended Storage	Room Temperature
Formula Weight	74.55
Specific Gravity	1g/mL
CAS Max %	0.05

701

Methylmagnesium chloride, 3M (22 wt.%) solution in THF, AcroSeal™

CAS: 676-58-4 Molecular Formula: CH3ClMg Molecular Weight (g/mol): 74.79 MDL Number: MFCD00000468 InChI Key: RQNMYNYHBQQZSP-UHFFFAOYSA-M Synonym: methylmagnesium chloride,chloromethylmagnesium,chloro methyl magnesium,magnesium, chloromethyl,memgcl,methylmagnesiumchloride,methyl magnesium chloride,unii-m5e1132g4w,ch3mgcl,qmabhcaih@ PubChem CID: 12670 IUPAC Name: chloro(methyl)magnesium SMILES: C[Mg]Cl

Pricing & Availability
Specifications

PubChem CID	12670
CAS	676-58-4
Molecular Weight (g/mol)	74.79
MDL Number	MFCD00000468
SMILES	C[Mg]Cl
Synonym	methylmagnesium chloride,chloromethylmagnesium,chloro methyl magnesium,magnesium, chloromethyl,memgcl,methylmagnesiumchloride,methyl magnesium chloride,unii-m5e1132g4w,ch3mgcl,qmabhcaih@
IUPAC Name	chloro(methyl)magnesium
InChI Key	RQNMYNYHBQQZSP-UHFFFAOYSA-M
Molecular Formula	CH3ClMg

702

Thermo Scientific Chemicals MES, 0.2M buffer soln., pH 6.0

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Specifications

PubChem CID	16218417
CAS	145224-94-8
Molecular Weight (g/mol)	213.248
MDL Number	MFCD00283848
SMILES	C1COCCN1CCS(=O)(=O)O.O
IUPAC Name	2-morpholin-4-ylethanesulfonic acid;hydrate
InChI Key	MIIIXQJBDGSIKL-UHFFFAOYSA-N
Molecular Formula	C6H15NO5S

703

Cerium(IV) sulfate, 0.1N Standardized Solution

CAS: 13590-82-4 Molecular Formula: CeO8S2 Molecular Weight (g/mol): 332.23 MDL Number: MFCD00148852 InChI Key: VZDYWEUILIUIDF-UHFFFAOYSA-J PubChem CID: 159684 IUPAC Name: cerium(4+);disulfate SMILES: [Ce+4].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O

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Specifications

PubChem CID	159684
CAS	13590-82-4
Molecular Weight (g/mol)	332.23
MDL Number	MFCD00148852
SMILES	[Ce+4].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O
IUPAC Name	cerium(4+);disulfate
InChI Key	VZDYWEUILIUIDF-UHFFFAOYSA-J
Molecular Formula	CeO8S2

704

Cobalt, AAS standard solution, Specpure™ Co 1000μg/mL

MDL Number: MFCD00010935

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Specifications

MDL Number	MFCD00010935

705

Thermo Scientific™ Sodium cacodylate, 0.1M buffer soln., pH 7.0

CAS: 6131-99-3 Molecular Formula: C2H6AsNaO2 Molecular Weight (g/mol): 159.98 MDL Number: MFCD00149079 InChI Key: IHQKEDIOMGYHEB-UHFFFAOYSA-M IUPAC Name: sodium dimethylarsinate SMILES: [Na+].C[As](C)([O-])=O

Pricing & Availability
Specifications

CAS	6131-99-3
Molecular Weight (g/mol)	159.98
MDL Number	MFCD00149079
SMILES	[Na+].C[As](C)([O-])=O
IUPAC Name	sodium dimethylarsinate
InChI Key	IHQKEDIOMGYHEB-UHFFFAOYSA-M
Molecular Formula	C2H6AsNaO2

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Buffers and Standards

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LabChem, Inc. Buffer Solution pH 1.0 at 25°C, Certified, LabChem™ GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

LabChem, Inc. Buffer Solution pH 1.0 at 25°C, Certified, LabChem™