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
Ricca Chemical Company Sodium Azide, 5% (w/v), Ricca Chemical
CAS: 26628-22-8 Molecular Formula: N3Na Molecular Weight (g/mol): 65.011 InChI Key: PXIPVTKHYLBLMZ-UHFFFAOYSA-N Synonym: sodium azide,azide, sodium,natriumazid,nemazyd,smite,kazoe,azoture de sodium,sodium azide na n3,hydrazoic acid, sodium salt,natriumazid german PubChem CID: 33557 ChEBI: CHEBI:278547 IUPAC Name: sodium;azide SMILES: [N-]=[N+]=[N-].[Na+]
Ricca Chemical Company Thioacetamide TS, 4% (w/v), Ricca Chemical
CAS: 62-55-5 Molecular Formula: C2H5NS Molecular Weight (g/mol): 75.13 MDL Number: MFCD00008070 InChI Key: YUKQRDCYNOVPGJ-UHFFFAOYSA-N Synonym: thioacetamide,acetothioamide,thiacetamide,acetamide, thio,thioacetimidic acid,acetimidic acid, thio,usaf cb-21,usaf ek-1719,rcra waste number u218,acetic acid, thiono-, amide PubChem CID: 2723949 ChEBI: CHEBI:32497 IUPAC Name: ethanethioamide SMILES: CC(N)=S
Ricca Chemical Company Phosphorus Standard, 1000 ppm P, Ricca Chemical
CAS: 7778-77-0 Molecular Formula: H2KO4P Molecular Weight (g/mol): 136.08 MDL Number: MFCD00011401 MFCD00147253 InChI Key: GNSKLFRGEWLPPA-UHFFFAOYSA-M PubChem CID: 516951 ChEBI: CHEBI:63036 IUPAC Name: potassium dihydrogen phosphate SMILES: [K+].OP(O)([O-])=O
Ricca Chemical Company Sodium Chloride, 5% (w/v), Ricca Chemical
CAS: 7647-14-5 Molecular Formula: ClNa Molecular Weight (g/mol): 58.44 MDL Number: MFCD00003477 InChI Key: FAPWRFPIFSIZLT-UHFFFAOYSA-M Synonym: sodium chloride,salt,table salt,halite,saline,rock salt,common salt,sodium chloride nacl,dendritis,purex PubChem CID: 5234 ChEBI: CHEBI:26710 IUPAC Name: sodium chloride SMILES: [Na+].[Cl-]
Ricca Chemical Company Barium Chloride TS/RS, 12% (w/v), Ricca Chemical
CAS: 10326-27-9 Molecular Formula: BaCl2H4O2 Molecular Weight (g/mol): 244.26 MDL Number: MFCD00149154 InChI Key: PWHCIQQGOQTFAE-UHFFFAOYSA-L Synonym: barium chloride dihydrate,bacl2.2h2o,barium 2+ dihydrate dichloride,barium 2+ dichloride dihydrate,acmc-20alrc,dsstox_cid_131,barium chloride, acs,dsstox_rid_75389,dsstox_gsid_20131,ksc174q7d PubChem CID: 5284346 ChEBI: CHEBI:86153 IUPAC Name: barium(2+) dihydrate dichloride SMILES: O.O.[Cl-].[Cl-].[Ba++]
Ricca Chemical Company Magnesium Sulfate, 2.25% (w/v), Ricca Chemical
CAS: 10034-99-8 Molecular Formula: H14MgO11S Molecular Weight (g/mol): 246.47 MDL Number: MFCD00149785 InChI Key: WRUGWIBCXHJTDG-UHFFFAOYSA-L Synonym: magnesium sulfate heptahydrate,mgso4.7h2o,magnesium sulfate 1:1 heptahydrate,magnesium sulphate heptahydrate,unii-sk47b8698t,magnesium sulfate usan:jan,sulfuric acid magnesium salt 1:1 , heptahydrate,magnesium sulfate heptahydrate mgso4.7h2o,sulfuric acid, magnesium salt 1:1 , heptahydrate,magnesium ii , sulfate, heptahydrate PubChem CID: 24843 ChEBI: CHEBI:31795 IUPAC Name: magnesium(2+) heptahydrate sulfate SMILES: O.O.O.O.O.O.O.[Mg++].[O-]S([O-])(=O)=O
Ricca Chemical Company Calcium Chloride Standard, 1000 ppm CaCO3 (400 ppm Ca), 0.0100 M Ca2+, 0.0200 N Ca2+, Ricca Chemical
CAS: 471-34-1 Molecular Formula: CCaO3 Molecular Weight (g/mol): 100.09 MDL Number: MFCD00010906 InChI Key: VTYYLEPIZMXCLO-UHFFFAOYSA-L PubChem CID: 10112 ChEBI: CHEBI:3311 IUPAC Name: calcium carbonate SMILES: [Ca++].[O-]C([O-])=O
Ricca Chemical Company Lead Acetate TS, 9.5% (w/v), Ricca Chemical
CAS: 6080-56-4 Molecular Formula: C4H12O7Pb Molecular Weight (g/mol): 379.30 MDL Number: MFCD00150023 InChI Key: MCEUZMYFCCOOQO-UHFFFAOYSA-L Synonym: lead acetate trihydrate,lead diacetate trihydrate,bleiazetat german,bis acetato trihydroxytrilead,unii-rx077p88ry,ccris 9031,lead acetate ii , trihydrate,lead acetate jan,acetic acid, lead +2 salt trihydrate,acetic acid, lead 2+ salt, trihydrate PubChem CID: 22456 ChEBI: CHEBI:33112 IUPAC Name: λ2-lead(2+) diacetate trihydrate SMILES: O.O.O.[Pb++].CC([O-])=O.CC([O-])=O
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++]
Ricca Chemical Company Iron AA Standard, 1000 ppm Fe in 3% HNO3, Ricca Chemical
CAS: 7439-89-6 Molecular Formula: Fe Molecular Weight (g/mol): 55.85 MDL Number: MFCD00010999 InChI Key: XEEYBQQBJWHFJM-UHFFFAOYSA-N PubChem CID: 23925 ChEBI: CHEBI:82664 IUPAC Name: iron SMILES: [Fe]
Ricca Chemical Company Ammonia R (175 g/L NH3), Ricca Chemical
CAS: 1336-21-6 Molecular Formula: H5NO Molecular Weight (g/mol): 35.05 MDL Number: MFCD00066650 InChI Key: VHUUQVKOLVNVRT-UHFFFAOYSA-N Synonym: ammonium hydroxide,ammonia water,ammonia aqueous,aquammonia,aqua ammonia,ammonia, aqua,household ammonia,ammonium hydroxide solution,ammonia, monohydrate,ammonium hydroxide nh4 oh PubChem CID: 14923 ChEBI: CHEBI:18219 IUPAC Name: amine hydrate SMILES: N.O