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

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Molecular Weight (g/mol)

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

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0.1 mol (1)
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Percent Purity

≥ 4400 Units/mg (Nystatin) ≥ 5000 Units/mg (Nystatin) (1) (8)
≥ 85.0 % (1)
≥14% (BF3) (1)
≥30% (RT) (1)
≥30% (titration) (1)
≥35% (RT) (1)
≥40% (3)

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pH

≥12 to ≤14 (6)
>11.5 (1)
>12 (44)
>13 (97)
>8 (1)
<0.5 (3)
<1 (98)

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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)
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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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Aqueous Solution (30)
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AA (467)
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For Use With (Application)

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631 – 645 of 44,681 results

631

Hyamine Solution, 0.004 M (0.004 N), Ricca Chemical

CAS: 121-54-0 Molecular Formula: C27H42ClNO2 Molecular Weight (g/mol): 448.088 InChI Key: UREZNYTWGJKWBI-UHFFFAOYSA-M Synonym: benzethonium chloride,quatrachlor,hyamine,phemeride,phemerol chloride,benzethoniumchloride,phemithyn,disilyn,kylacol,solamin PubChem CID: 8478 ChEBI: CHEBI:31264 IUPAC Name: benzyl-dimethyl-[2-[2-[4-(2,4,4-trimethylpentan-2-yl)phenoxy]ethoxy]ethyl]azanium;chloride SMILES: CC(C)(C)CC(C)(C)C1=CC=C(C=C1)OCCOCC[N+](C)(C)CC2=CC=CC=C2.[Cl-]

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Specifications

PubChem CID	8478
CAS	121-54-0
Molecular Weight (g/mol)	448.088
ChEBI	CHEBI:31264
SMILES	CC(C)(C)CC(C)(C)C1=CC=C(C=C1)OCCOCC[N+](C)(C)CC2=CC=CC=C2.[Cl-]
Synonym	benzethonium chloride,quatrachlor,hyamine,phemeride,phemerol chloride,benzethoniumchloride,phemithyn,disilyn,kylacol,solamin
IUPAC Name	benzyl-dimethyl-[2-[2-[4-(2,4,4-trimethylpentan-2-yl)phenoxy]ethoxy]ethyl]azanium;chloride
InChI Key	UREZNYTWGJKWBI-UHFFFAOYSA-M
Molecular Formula	C27H42ClNO2

632

Phosphate Buffered Saline, 1X - Non-sterile, Ricca Chemical

Phosphate Buffered Saline, 1X is non-sterile.

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633

Lithium aluminum hydride, 4.0M solution in diethyl ether, AcroSeal™

CAS: 16853-85-3 | AlH4Li | 37.95 g/mol

Pricing & Availability
Specifications

Linear Formula	LiAIH₄
Molecular Weight (g/mol)	37.95
InChI Key	OCZDCIYGECBNKL-UHFFFAOYSA-N
Density	0.7100g/mL
PubChem CID	21226445
Name Note	4.0M Solution in Diethyl Ether
Percent Purity	18.0 to 22.0% (as LiAlH4)
Fieser	01,581; 02,242; 03,176; 04,291; 05,382; 06,325; 07,196; 08,286; 09,274; 10,236; 11,289; 12,272; 13,61; 14,190; 15,184; 16,133; 17,162
Formula Weight	37.95
Color	Colorless
Physical Form	Liquid
Chemical Name or Material	Lithium Aluminum hydride
SMILES	[Li+].[AlH4-]
Merck Index	15, 344
CAS	60-29-7
Health Hazard 3	GHS P Statement Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Keep away from any possible contact with water, because of violent reaction and possible flash fire. 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. Do not breathe dust/fume/gas/mist/vapors/spray.
MDL Number	MFCD00011075
Health Hazard 2	GHS H Statement Causes severe skin burns and eye damage. Harmful if swallowed. May cause drowsiness or dizziness. In contact with water releases flammable gases which may ignite spontaneously. Extremely flammable liquid and vapor. May form explosive peroxides. Repeated exposure may cause skin dryness or cracking.
Flash Point	−017°C
Solubility Information	Solubility in water: vigorous reaction.
Health Hazard 1	Danger
Synonym	lithium aluminum hydride,lithium aluminum hydride,aluminum lithium hydride,lithiumaluminiumhydride,aluminum iii lithium hydride,lithium alanate,lithium aluminum tetrahydride,lithiumaluminiumhydrid,litiumaluminum hydride,lithim aluminum hydride
Recommended Storage	Product may develop some turbidity or precipitate
IUPAC Name	lithium(1+) alumanuide
Molecular Formula	AlH4Li
Specific Gravity	0.71

634

Ethidium bromide soln., 10mg/ml

CAS: 1239-45-8 Molecular Formula: C21H20BrN3 Molecular Weight (g/mol): 394.32 MDL Number: MFCD00011724 InChI Key: ZMMJGEGLRURXTF-UHFFFAOYSA-N Synonym: ethidium bromide,homidium bromide,dromilac,3,8-diamino-5-ethyl-6-phenylphenanthridinium bromide,ethydium bromide,3,8-diamino-5-ethyl-6-phenylphenanthridin-5-ium bromide,etbr,2,7-diamino-10-ethyl-9-phenylphenanthridinium bromide,2,7-diamino-9-phenyl-10-ethylphenanthridinium bromide,unii-059nuo2z1l PubChem CID: 14710 ChEBI: CHEBI:4883 IUPAC Name: 5-ethyl-6-phenylphenanthridin-5-ium-3,8-diamine;bromide SMILES: [Br-].CC[N+]1=C(C2=CC=CC=C2)C2=CC(N)=CC=C2C2=CC=C(N)C=C12

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Specifications

PubChem CID	14710
CAS	1239-45-8
Molecular Weight (g/mol)	394.32
ChEBI	CHEBI:4883
MDL Number	MFCD00011724
SMILES	[Br-].CC[N+]1=C(C2=CC=CC=C2)C2=CC(N)=CC=C2C2=CC=C(N)C=C12
Synonym	ethidium bromide,homidium bromide,dromilac,3,8-diamino-5-ethyl-6-phenylphenanthridinium bromide,ethydium bromide,3,8-diamino-5-ethyl-6-phenylphenanthridin-5-ium bromide,etbr,2,7-diamino-10-ethyl-9-phenylphenanthridinium bromide,2,7-diamino-9-phenyl-10-ethylphenanthridinium bromide,unii-059nuo2z1l
IUPAC Name	5-ethyl-6-phenylphenanthridin-5-ium-3,8-diamine;bromide
InChI Key	ZMMJGEGLRURXTF-UHFFFAOYSA-N
Molecular Formula	C21H20BrN3

635

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Cabozantinib (S)-malate, Thermo Scientific™

CAS: 1140909-48-3 Molecular Formula: C32H30FN3O10 Molecular Weight (g/mol): 635.60 MDL Number: MFCD20923480 InChI Key: HFCFMRYTXDINDK-UHFFFAOYNA-N IUPAC Name: 2-hydroxybutanedioic acid; N'1-{4-[(6,7-dimethoxyquinolin-4-yl)oxy]phenyl}-N1-(4-fluorophenyl)cyclopropane-1,1-dicarboxamide SMILES: OC(CC(O)=O)C(O)=O.COC1=C(OC)C=C2C(OC3=CC=C(NC(=O)C4(CC4)C(=O)NC4=CC=C(F)C=C4)C=C3)=CC=NC2=C1

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Specifications

CAS	1140909-48-3
Molecular Weight (g/mol)	635.60
MDL Number	MFCD20923480
SMILES	OC(CC(O)=O)C(O)=O.COC1=C(OC)C=C2C(OC3=CC=C(NC(=O)C4(CC4)C(=O)NC4=CC=C(F)C=C4)C=C3)=CC=NC2=C1
IUPAC Name	2-hydroxybutanedioic acid; N'1-{4-[(6,7-dimethoxyquinolin-4-yl)oxy]phenyl}-N1-(4-fluorophenyl)cyclopropane-1,1-dicarboxamide
InChI Key	HFCFMRYTXDINDK-UHFFFAOYNA-N
Molecular Formula	C32H30FN3O10

636

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Thermo Scientific Chemicals PIPES, 98.5+%, for biochemistry

CAS: 5625-37-6 Molecular Formula: C8H18N2O6S2 Molecular Weight (g/mol): 302.36 InChI Key: IHPYMWDTONKSCO-UHFFFAOYSA-N Synonym: 1, 4-Piperazinebis(ethanesulfonic acid) PubChem CID: 79723 ChEBI: CHEBI:44933 IUPAC Name: 2-[4-(2-sulfoethyl)piperazin-1-yl]ethanesulfonic acid SMILES: C1CN(CCN1CCS(=O)(=O)O)CCS(=O)(=O)O

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Specifications

PubChem CID	79723
CAS	5625-37-6
Molecular Weight (g/mol)	302.36
ChEBI	CHEBI:44933
SMILES	C1CN(CCN1CCS(=O)(=O)O)CCS(=O)(=O)O
Synonym	1, 4-Piperazinebis(ethanesulfonic acid)
IUPAC Name	2-[4-(2-sulfoethyl)piperazin-1-yl]ethanesulfonic acid
InChI Key	IHPYMWDTONKSCO-UHFFFAOYSA-N
Molecular Formula	C8H18N2O6S2

637

Potassium Dichromate TS, 7.5% (w/v), Ricca Chemical

CAS: 7778-50-9 Molecular Formula: Cr2K2O7 Molecular Weight (g/mol): 294.182 InChI Key: KMUONIBRACKNSN-UHFFFAOYSA-N Synonym: potassium dichromate,potassium bichromate,kaliumdichromat,iopezite,dipotassium bichromate,dipotassium dichromate,potassium dichromate vi,dichromic acid dipotassium salt,dipotassium dichromium heptaoxide,bichromate of potash PubChem CID: 24502 ChEBI: CHEBI:53444 IUPAC Name: dipotassium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium SMILES: [O-][Cr](=O)(=O)O[Cr](=O)(=O)[O-].[K+].[K+]

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Specifications

PubChem CID	24502
CAS	7778-50-9
Molecular Weight (g/mol)	294.182
ChEBI	CHEBI:53444
SMILES	[O-][Cr](=O)(=O)O[Cr](=O)(=O)[O-].[K+].[K+]
Synonym	potassium dichromate,potassium bichromate,kaliumdichromat,iopezite,dipotassium bichromate,dipotassium dichromate,potassium dichromate vi,dichromic acid dipotassium salt,dipotassium dichromium heptaoxide,bichromate of potash
IUPAC Name	dipotassium;oxido-(oxido(dioxo)chromio)oxy-dioxochromium
InChI Key	KMUONIBRACKNSN-UHFFFAOYSA-N
Molecular Formula	Cr2K2O7

638

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Thermo Scientific Chemicals HEPES sodium salt, 99%

CAS: 75277-39-3 Molecular Formula: C8H17N2NaO4S Molecular Weight (g/mol): 260.28 MDL Number: MFCD00036463 InChI Key: RDZTWEVXRGYCFV-UHFFFAOYSA-M Synonym: 2-[4-(2-Hydroxyethyl)-1-piperazine]ethanesulfonic acid sodium salt PubChem CID: 2724248 ChEBI: CHEBI:46758 IUPAC Name: sodium 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethane-1-sulfonate SMILES: [Na+].OCCN1CCN(CCS([O-])(=O)=O)CC1

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Specifications

PubChem CID	2724248
CAS	75277-39-3
Molecular Weight (g/mol)	260.28
ChEBI	CHEBI:46758
MDL Number	MFCD00036463
SMILES	[Na+].OCCN1CCN(CCS([O-])(=O)=O)CC1
Synonym	2-[4-(2-Hydroxyethyl)-1-piperazine]ethanesulfonic acid sodium salt
IUPAC Name	sodium 2-[4-(2-hydroxyethyl)piperazin-1-yl]ethane-1-sulfonate
InChI Key	RDZTWEVXRGYCFV-UHFFFAOYSA-M
Molecular Formula	C8H17N2NaO4S

639

VeriSpec™ Sulphate - SO₄²^- Standard for Ion Chromatography 1000 ppm in H₂O, Ricca Chemical

CAS: 7783-20-2 Molecular Formula: H8N2O4S Molecular Weight (g/mol): 132.13 MDL Number: MFCD00003391 InChI Key: BFNBIHQBYMNNAN-UHFFFAOYSA-N PubChem CID: 6097028 ChEBI: CHEBI:62946 IUPAC Name: sulfuric acid diamine SMILES: N.N.OS(O)(=O)=O

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Specifications

PubChem CID	6097028
CAS	7783-20-2
Molecular Weight (g/mol)	132.13
ChEBI	CHEBI:62946
MDL Number	MFCD00003391
SMILES	N.N.OS(O)(=O)=O
IUPAC Name	sulfuric acid diamine
InChI Key	BFNBIHQBYMNNAN-UHFFFAOYSA-N
Molecular Formula	H8N2O4S

640

Potassium Chloride Conductivity Standard, 5000 μS/cm at 25°C, Ricca Chemical

CAS: 7447-40-7 Molecular Formula: ClK Molecular Weight (g/mol): 74.55 MDL Number: MFCD00011360 InChI Key: WCUXLLCKKVVCTQ-UHFFFAOYSA-M PubChem CID: 4873 ChEBI: CHEBI:32588 IUPAC Name: potassium chloride SMILES: [Cl-].[K+]

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Specifications

PubChem CID	4873
CAS	7447-40-7
Molecular Weight (g/mol)	74.55
ChEBI	CHEBI:32588
MDL Number	MFCD00011360
SMILES	[Cl-].[K+]
IUPAC Name	potassium chloride
InChI Key	WCUXLLCKKVVCTQ-UHFFFAOYSA-M
Molecular Formula	ClK

641

Buffer solution pH 4.01 (+/-0.022 @ 25oC) No Color Specpure NIST Traceable

CAS: 1336-21-6 | H5NO | 35.05 g/mol

Pricing & Availability
Specifications

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

642

Potassium Chloride Conductivity Standard, 50,000 μS/cm (50 mS/cm) at 25°C, Ricca Chemical

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Specifications

PubChem CID	4873
CAS	7447-40-7
Molecular Weight (g/mol)	74.55
ChEBI	CHEBI:32588
MDL Number	MFCD00011360
SMILES	[Cl-].[K+]
IUPAC Name	potassium chloride
InChI Key	WCUXLLCKKVVCTQ-UHFFFAOYSA-M
Molecular Formula	ClK

643

Potassium chloride, 0.010M, Conductivity Standard

CAS: 7447-40-7 Molecular Formula: ClK Molecular Weight (g/mol): 74.55 MDL Number: MFCD00011360 InChI Key: WCUXLLCKKVVCTQ-UHFFFAOYSA-M PubChem CID: 4873 ChEBI: CHEBI:32588 SMILES: [Cl-].[K+]

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Specifications

PubChem CID	4873
CAS	7447-40-7
Molecular Weight (g/mol)	74.55
ChEBI	CHEBI:32588
MDL Number	MFCD00011360
SMILES	[Cl-].[K+]
InChI Key	WCUXLLCKKVVCTQ-UHFFFAOYSA-M
Molecular Formula	ClK

644

Ethylenediaminetetraacetic Acid, in PBS, MP Biomedicals

CAS: 6381-92-6 Molecular Formula: C10H18N2Na2O10 Molecular Weight (g/mol): 372.24 MDL Number: MFCD00150037,MFCD00003541 InChI Key: OVBJJZOQPCKUOR-UHFFFAOYSA-L Synonym: edta disodium salt,cal-ex decalcifier,buffer solution, ph 10.00,sodium di ethylenediamine tetraacetate dihydrate,ethylenediamine tetraacetic acid, disodium salt dihydrate,ethylenediamine tetraacetic acid, disodium salt, standard solution,sodium di ethylenediamine tetraacetate standard solution,ethylenedinitrilo tetraacetic acid disodium, dihydrate, reagent, acs PubChem CID: 44120005 IUPAC Name: disodium;2-[2-[bis(carboxymethyl)amino]ethyl-(carboxylatomethyl)amino]acetate;dihydrate SMILES: O.O.[Na+].[Na+].OC(=O)CN(CCN(CC(O)=O)CC([O-])=O)CC([O-])=O

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Specifications

PubChem CID	44120005
CAS	6381-92-6
Molecular Weight (g/mol)	372.24
MDL Number	MFCD00150037,MFCD00003541
SMILES	O.O.[Na+].[Na+].OC(=O)CN(CCN(CC(O)=O)CC([O-])=O)CC([O-])=O
Synonym	edta disodium salt,cal-ex decalcifier,buffer solution, ph 10.00,sodium di ethylenediamine tetraacetate dihydrate,ethylenediamine tetraacetic acid, disodium salt dihydrate,ethylenediamine tetraacetic acid, disodium salt, standard solution,sodium di ethylenediamine tetraacetate standard solution,ethylenedinitrilo tetraacetic acid disodium, dihydrate, reagent, acs
IUPAC Name	disodium;2-[2-[bis(carboxymethyl)amino]ethyl-(carboxylatomethyl)amino]acetate;dihydrate
InChI Key	OVBJJZOQPCKUOR-UHFFFAOYSA-L
Molecular Formula	C10H18N2Na2O10

645

Thermo Scientific Chemicals Potassium phosphate, 0.2M buffer soln., pH 7.4

CAS: 7778-77-0 Molecular Formula: H2KO4P Molecular Weight (g/mol): 136.08 MDL Number: MFCD00011401 MFCD00147253 InChI Key: GNSKLFRGEWLPPA-UHFFFAOYSA-M IUPAC Name: potassium dihydrogen phosphate SMILES: [K+].OP(O)([O-])=O

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Specifications

CAS	7778-77-0
Molecular Weight (g/mol)	136.08
MDL Number	MFCD00011401 MFCD00147253
SMILES	[K+].OP(O)([O-])=O
IUPAC Name	potassium dihydrogen phosphate
InChI Key	GNSKLFRGEWLPPA-UHFFFAOYSA-M
Molecular Formula	H2KO4P

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Potassium Chloride Conductivity Standard, 5000 μS/cm at 25°C, Ricca Chemical GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Potassium Chloride Conductivity Standard, 50,000 μS/cm (50 mS/cm) at 25°C, Ricca Chemical GSA/VA ContractAvailable on GSA/VA contract for Federal Government customers.Learn More

Potassium Chloride Conductivity Standard, 5000 μS/cm at 25°C, Ricca Chemical

Potassium Chloride Conductivity Standard, 50,000 μS/cm (50 mS/cm) at 25°C, Ricca Chemical