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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 (23,969)
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Kjeldahl Buffers and Reagents (90)
Gel Filtration Standards (57)
Matrix Modifiers (29)
Osmolality Standards (12)
Smoke Point Reference (10)
Polarimetric Standards (6)

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1,261 – 1,275 of 44,374 results
1,261

Silver sulfate, pure, 10 g/l solution in sulfuric acid

CAS: 10294-26-5 | Ag2H2O4S | 313.81 g/mol

Linear Formula Ag2SO4
Molecular Weight (g/mol) 313.81
InChI Key YPNVIBVEFVRZPJ-UHFFFAOYSA-N
Density 1.8400g/mL
PubChem CID 159865
Name Note 10g/L Solution in Sulfuric Acid
Fieser 01,1015; 03,254; 04,435
Formula Weight 311.79
Color Colorless
Physical Form Liquid
Chemical Name or Material Silver sulfate
Grade Pure
SMILES [Ag+].[Ag+].OS(O)(=O)=O
Merck Index 15, 8668
CAS 7664-93-9
Health Hazard 3 GHS P Statement:
IF SWALLOWED: rinse mouth. Do NOT induce vomiting.
Wear protective gloves/protective clothing/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 ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower.

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 MFCD00003407
Health Hazard 2 GHS H Statement:
Causes severe skin burns and eye damage.
Packaging Glass bottle
Health Hazard 1 Danger
Synonym silver sulfate,disilver sulfate,disilver 1+ sulfate,unii-8qg6hv4zpo,disilver 1+ sulphate,sulfuric acid, disilver 1+ salt,8qg6hv4zpo,disilver 1+ ion sulfate,sulfuric acid, silver 1+ salt 1:2,sulfuric acid disilver i salt
TSCA TSCA
IUPAC Name disilver(1+) sulfuric acid
Molecular Formula Ag2H2O4S
EINECS Number 233-653-7
Specific Gravity 1.84
1,263

PESTANAL™ Fenthion-sulfone, MilliporeSigma™ Supelco™

Fenthion-sulfone is one of the metabolites of fenthion which is classified under the organophosphorus group of pesticides.

1,269

Methyl pentadecanoate, ≥99.5% (GC), MilliporeSigma™ Supelco™

Boiling Point 141°C to 142°C (3 mmHg)
Shipping Condition Ambient
Linear Formula CH3(CH2)13 CO2 CH3
Physical Form Neat
Grade Analytical Standard
Density 0.865 g/mL at 20°C; 0.862 g/mL (at 25°C)
Type Analytical Standard
Percent Purity ≥99.5% (GC)
CAS 7132-64-1
MDL Number MFCD00008989
Synonym Pentadecanoic acid methyl ester
Shelf Life Limited shelf life, expiry date on the label
Formula Weight 256.42
Melting Point 18°C to 19°C
1,271

PESTANAL™ Valifenalate, Mixture of isomers, MilliporeSigma™ Supelco™

Valifenalate is a fungicide, which can be used to control downy mildew disease caused by Plasmopara viticola fungi in vines.

1,273

4-(Methylnitrosamino)-1-(3-pyridyl)-1-butanol, ≥92% (TLC), MilliporeSigma™ Supelco™

Standard for Supelco MIP SPE cartridges. For more information request Supelco Literature T407075, T706031

1,274

Albendazole-2-aminosulfone, ≥99.0% (HPLC), MilliporeSigma™ Supelco™

Albendazole-2-aminosulfone is a metabolite of albendazole which is a broad-spectrum antihelmintic agent.

1,275

Auramine, Analytical Standard, ≥97.0% (HPLC), MilliporeSigma™ Supelco™

Auramine is a diphenylmethane dye, used in fluorescence microscopy.