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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Grade

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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 mol (1)
0.5 L (1)
0.5 mL (15)
0.5 mol (1)
1 Bottle (5)
1 Box (1)
1 Ea. (5)

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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)
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)
Crystalline (17)

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Technique

AA (467)
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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For Use With (Application)

Accurate calibrations and NIST traceability (1)
Accurate calibrations and NIST traceability, laboratory and bench analysis (2)
Accurate calibrations and NIST traceability, portable and field analysis (1)
Accurate pH calibrations and NIST traceability, laboratory and bench analysis (8)
Accurate pH calibrations and NIST traceability, portable and field analysis (6)
Accurate, reproducible pH calibrations (16)
Agarose Gel Electrophoresis, Polyacrylamide Gel Electrophoresis (1)

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Search Within Results

481 – 495 of 44,646 results

481

Ammonia, ca. 7N solution in methanol, AcroSeal™

CAS: 7664-41-7 | H3N | 17.03 g/mol

Pricing & Availability
Specifications

Linear Formula	NH₃
Molecular Weight (g/mol)	17.03
ChEBI	CHEBI:16134
Color	Colorless to Yellow
Physical Form	Liquid
Chemical Name or Material	Ammonia
SMILES	N
Merck Index	15, 488
Concentration	6.0 to 7.5N
InChI Key	QGZKDVFQNNGYKY-UHFFFAOYSA-N
Density	0.7700g/mL
PubChem CID	222
Name Note	7N solution in methanol
CAS	67-56-1
Health Hazard 3	GHS P Statement: IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. Wear protective gloves/protective clothing/eye protection/face protection. Call a POISON CENTER or doctor/physician if you feel unwell. IF ON SKIN: Gently wash with plenty of soap and water. IF SWALLOWED: rinse mouth. Do NOT induce vomiting. Wear eye protection/face protection. 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. IF exposed: Call a POISON CENTER or doctor/physician. IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing. Avoid release to the environment. Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Ground/Bond container and receiving equipment. WARNING: The information provided on this web site was developed in compliance with European Union (EU) regulations and is correct to the best of our knowledge, information and belief at the date of its publication. The information given is designed only as a guide for safe handling and use. It is not to be considered as either a warranty or quality specification.
MDL Number	MFCD00011418
Health Hazard 2	GHS H Statement: Toxic if swallowed. Causes severe skin burns and eye damage. Toxic in contact with skin. Causes damage to organs. Fatal if inhaled. Highly flammable liquid and vapor.
Flash Point	14°C
Packaging	AcroSeal™ Glass Bottle
Health Hazard 1	GHS Signal Word: Danger
Synonym	ammonia,ammonia gas,spirit of hartshorn,nitro-sil,ammoniakgas,ammonia anhydrous,anhydrous ammonia,ammonia, anhydrous,ammoniak,am-fol
IUPAC Name	azane
Molecular Formula	H3N
Formula Weight	17.03
Specific Gravity	0.77

482

Thermo Scientific Chemicals Iodine, 0.01N Standardized Solution

CAS: 7553-56-2 | I2 | 253.81 g/mol

Pricing & Availability
Specifications

Molecular Weight (g/mol)	253.81
ChEBI	CHEBI:17606
Solubility	Miscible with chloroform, carbon tetrachloride, carbon disulfide, cyclohexane, methanol, ethyl acetate, toluene, benzene, n-hexane, butan-2-ol, bromoethane, n-heptane, glycerol and diethyl ether
Color	Red to Brown
Physical Form	Liquid
Chemical Name or Material	Iodine
SMILES	II
InChI Key	PNDPGZBMCMUPRI-UHFFFAOYSA-N
Vapor Pressure	23 hPa (17mm Hg) at 20°C
PubChem CID	807
Concentration or Composition (by Analyte or Components)	Iodine: 0.13%; Potassium iodide: 2.5%; Water: 97.37%
CAS	7732-18-5
MDL Number	MFCD00011355 MFCD00164163
TSCA	Yes
Recommended Storage	Ambient temperatures
Molecular Formula	I2
EINECS Number	231-442-4
Formula Weight	253.81

483

Sulfuric acid, 0.5N Standardized Solution

CAS: 7664-93-9 Molecular Formula: H2O4S Molecular Weight (g/mol): 98.07 MDL Number: MFCD00064589 InChI Key: QAOWNCQODCNURD-UHFFFAOYSA-N PubChem CID: 1118 ChEBI: CHEBI:26836 IUPAC Name: sulfuric acid SMILES: OS(O)(=O)=O

Pricing & Availability
Specifications

PubChem CID	1118
CAS	7664-93-9
Molecular Weight (g/mol)	98.07
ChEBI	CHEBI:26836
MDL Number	MFCD00064589
SMILES	OS(O)(=O)=O
IUPAC Name	sulfuric acid
InChI Key	QAOWNCQODCNURD-UHFFFAOYSA-N
Molecular Formula	H2O4S

484

Sodium hydroxide, 40% w/v aq. soln.

CAS: 1310-73-2 Molecular Formula: HNaO Molecular Weight (g/mol): 39.997 MDL Number: MFCD00003548 InChI Key: HEMHJVSKTPXQMS-UHFFFAOYSA-M Synonym: sodium hydroxide,caustic soda,sodium hydrate,white caustic,soda lye,aetznatron,ascarite,sodium hydroxide na oh,sodium hydroxide solution,soda, caustic PubChem CID: 14798 ChEBI: CHEBI:32145 IUPAC Name: sodium;hydroxide SMILES: [OH-].[Na+]

Pricing & Availability
Specifications

PubChem CID	14798
CAS	1310-73-2
Molecular Weight (g/mol)	39.997
ChEBI	CHEBI:32145
MDL Number	MFCD00003548
SMILES	[OH-].[Na+]
Synonym	sodium hydroxide,caustic soda,sodium hydrate,white caustic,soda lye,aetznatron,ascarite,sodium hydroxide na oh,sodium hydroxide solution,soda, caustic
IUPAC Name	sodium;hydroxide
InChI Key	HEMHJVSKTPXQMS-UHFFFAOYSA-M
Molecular Formula	HNaO

485

Water Hardness Buffer, with Magnesium, Certified, LabChem™

Pricing & Availability
Specifications

Linear Formula	NH₄OH
Color	Colorless
Physical Form	Liquid
UN Number	UN2672
Chemical Name or Material	Water Hardness Buffer
Grade	Certified
Identification	Passes Test
Density	0.96g/mL
Name Note	with Magnesium
CAS	14402-88-1
Health Hazard 3	GHS P Statement Do not breathe vapors, mist, spray. Wear protective gloves, protective clothing, eye protection, face protection. Wash exposed skin thoroughly after handling. Avoid release to the environment. If swallowed: Rinse mouth. Do not induce vomiting. Immediately call a poison center/doctor. If on skin (or air): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. Immediately call a poison center/doctor. Wash contaminated clothing before reuse. If inhaled: Remove person to fresh air and keep comfortable for breathing. Immediately call a poison center/doctor. 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/doctor. Store locked up. Dispose of contents/container to comply with local, state and federal regulations.
Decomposition Information	Fume; Carbon monoxide; Carbon dioxide; Thermal decomposition generates: Corrosive vapors
Health Hazard 2	GHS H Statement Causes severe skin burns and eye damage. Toxic to aquatic life.
Solubility Information	Soluble in water
Packaging	Poly Bottle
Health Hazard 1	Danger
Recommended Storage	Room Temperature
Formula Weight	35.05
Specific Gravity	0.96g/mL
CAS Max %	0.5

486

Chemical Solution, Buffer Solution pH 10.0 at 25°C, Color Coded Blue, Traceable to NIST, LabChem

This Chemical Solution, Buffer Solution has a pH of 10.0 at 25°C, is Color Coded Blue, and is Traceable to NIST.

Pricing & Availability
Specifications

Traceability to NIST	Yes
Physical Form	Aqueous Solution
Solution Type	Buffer

487

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Lithium diisopropylamide, 2M sol. in THF/n-heptane/ethylbenzene, AcroSeal™

CAS: 4111-54-0 Molecular Formula: C6H14LiN Molecular Weight (g/mol): 107.125 MDL Number: MFCD00064449 InChI Key: ZCSHNCUQKCANBX-UHFFFAOYSA-N Synonym: lithium diisopropylamide,unii-ol028kiw1i,lithium di-isopropylamide,lithium diisopropyl amide,2-propanamine, n-1-methylethyl-, lithium salt,ol028kiw1i,lithium di propan-2-yl azanide,2-propanamine, n-1-methylethyl-, lithium salt 1:1,lithium n,n-diisopropylamide,ipr2nli PubChem CID: 2724682 IUPAC Name: lithium;di(propan-2-yl)azanide SMILES: [Li+].CC(C)[N-]C(C)C

Pricing & Availability
Specifications

PubChem CID	2724682
CAS	4111-54-0
Molecular Weight (g/mol)	107.125
MDL Number	MFCD00064449
SMILES	[Li+].CC(C)[N-]C(C)C
Synonym	lithium diisopropylamide,unii-ol028kiw1i,lithium di-isopropylamide,lithium diisopropyl amide,2-propanamine, n-1-methylethyl-, lithium salt,ol028kiw1i,lithium di propan-2-yl azanide,2-propanamine, n-1-methylethyl-, lithium salt 1:1,lithium n,n-diisopropylamide,ipr2nli
IUPAC Name	lithium;di(propan-2-yl)azanide
InChI Key	ZCSHNCUQKCANBX-UHFFFAOYSA-N
Molecular Formula	C6H14LiN

488

Thermo Scientific Chemicals TRIS, 1.0M buffer soln., pH 9.0

CAS: 77-86-1 Molecular Formula: C4H11NO3 Molecular Weight (g/mol): 121.136 MDL Number: MFCD00004679 InChI Key: LENZDBCJOHFCAS-UHFFFAOYSA-N PubChem CID: 6503 ChEBI: CHEBI:9754 IUPAC Name: 2-amino-2-(hydroxymethyl)propane-1,3-diol SMILES: C(C(CO)(CO)N)O

Pricing & Availability
Specifications

PubChem CID	6503
CAS	77-86-1
Molecular Weight (g/mol)	121.136
ChEBI	CHEBI:9754
MDL Number	MFCD00004679
SMILES	C(C(CO)(CO)N)O
IUPAC Name	2-amino-2-(hydroxymethyl)propane-1,3-diol
InChI Key	LENZDBCJOHFCAS-UHFFFAOYSA-N
Molecular Formula	C4H11NO3

489

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

Pricing & Availability
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

490

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Vinylmagnesium bromide, 0.7M solution in THF, AcroSeal™

CAS: 1826-67-1 Molecular Formula: C2H3BrMg Molecular Weight (g/mol): 131.26 MDL Number: MFCD00000042 InChI Key: XHHHAXOHMKAOSL-UHFFFAOYSA-M Synonym: vinylmagnesium bromide,bromo ethenyl magnesium,vinyl magnesium bromide,magnesium, bromoethenyl,vinylmagnesium bromide solution,vinylmagnesium bromide solution, 1.0 m in thf,bromovinylmagnesium,bromo vinyl magnesium,vinyl magnesiumbromide,grignard reagent PubChem CID: 74584 SMILES: Br[Mg]C=C

Pricing & Availability
Specifications

PubChem CID	74584
CAS	1826-67-1
Molecular Weight (g/mol)	131.26
MDL Number	MFCD00000042
SMILES	Br[Mg]C=C
Synonym	vinylmagnesium bromide,bromo ethenyl magnesium,vinyl magnesium bromide,magnesium, bromoethenyl,vinylmagnesium bromide solution,vinylmagnesium bromide solution, 1.0 m in thf,bromovinylmagnesium,bromo vinyl magnesium,vinyl magnesiumbromide,grignard reagent
InChI Key	XHHHAXOHMKAOSL-UHFFFAOYSA-M
Molecular Formula	C2H3BrMg

491

Turbidity Standard, 100 NTU, Formazin, Ricca Chemical

CAS: 100-97-0 Molecular Formula: C6H12N4 Molecular Weight (g/mol): 140.19 InChI Key: VKYKSIONXSXAKP-UHFFFAOYSA-N PubChem CID: 4101 ChEBI: CHEBI:6824 SMILES: C1N2CN3CN1CN(C2)C3

Pricing & Availability
Specifications

PubChem CID	4101
CAS	100-97-0
Molecular Weight (g/mol)	140.19
ChEBI	CHEBI:6824
SMILES	C1N2CN3CN1CN(C2)C3
InChI Key	VKYKSIONXSXAKP-UHFFFAOYSA-N
Molecular Formula	C6H12N4

492

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Thermo Scientific Chemicals MES monohydrate, 98%

CAS: 145224-94-8 Molecular Formula: C6H15NO5S Molecular Weight (g/mol): 213.25 MDL Number: MFCD00149409 InChI Key: MIIIXQJBDGSIKL-UHFFFAOYSA-N PubChem CID: 16218417 IUPAC Name: 2-(morpholin-4-yl)ethane-1-sulfonic acid hydrate SMILES: O.OS(=O)(=O)CCN1CCOCC1

Pricing & Availability
Specifications

PubChem CID	16218417
CAS	145224-94-8
Molecular Weight (g/mol)	213.25
MDL Number	MFCD00149409
SMILES	O.OS(=O)(=O)CCN1CCOCC1
IUPAC Name	2-(morpholin-4-yl)ethane-1-sulfonic acid hydrate
InChI Key	MIIIXQJBDGSIKL-UHFFFAOYSA-N
Molecular Formula	C6H15NO5S

493

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TBE Buffer, Tris-Borate-EDTA, 1X Solution, Electrophoresis, Fisher BioReagents

Pricing & Availability
Specifications

Name Note	1X Solution
CAS	7732-18-5
Protease	Protease free
Color	Colorless
Physical Form	Liquid
pH	8.2 to 8.4
Chemical Name or Material	Tris-Borate-EDTA
Grade	Electrophoresis
Synonym	TBE
DNase	DNase free
Recommended Storage	RT
Filtered Through	Filtered through a 0.2-micron filter.
ChemAlert Storage Symbol	Gray

494

Potassium chloride, 1M aq. soln.

CAS: 7447-40-7 Molecular Formula: ClK Molecular Weight (g/mol): 74.55 MDL Number: MFCD00011360 InChI Key: WCUXLLCKKVVCTQ-UHFFFAOYSA-M Synonym: potassium chloride,enseal,muriate of potash,klotrix,sylvite,slow-k,potassium chloride kcl,klor-con,chlorvescent,kalitabs PubChem CID: 4873 ChEBI: CHEBI:32588 IUPAC Name: potassium chloride SMILES: [Cl-].[K+]

Pricing & Availability
Specifications

PubChem CID	4873
CAS	7447-40-7
Molecular Weight (g/mol)	74.55
ChEBI	CHEBI:32588
MDL Number	MFCD00011360
SMILES	[Cl-].[K+]
Synonym	potassium chloride,enseal,muriate of potash,klotrix,sylvite,slow-k,potassium chloride kcl,klor-con,chlorvescent,kalitabs
IUPAC Name	potassium chloride
InChI Key	WCUXLLCKKVVCTQ-UHFFFAOYSA-M
Molecular Formula	ClK

495

Potassium bromate/Potassium bromide, 0.1N Standardized Solution

Molecular Formula: KBrO₃/KBr MDL Number: MFCD00011359

Pricing & Availability
Specifications

MDL Number	MFCD00011359
Molecular Formula	KBrO₃/KBr

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