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 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 Fluoride Standard, 100 ppm F-, 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+]
Ricca Chemical Company Cupric Sulfate CS, USP/EP Blue Primary Solution, Ricca Chemical
CAS: 7758-99-8 Molecular Formula: CuH10O9S Molecular Weight (g/mol): 249.68 MDL Number: MFCD00149681 InChI Key: JZCCFEFSEZPSOG-UHFFFAOYSA-L Synonym: copper ii sulfate pentahydrate,copper sulfate pentahydrate,cupric sulfate pentahydrate,blue vitriol,calcanthite,bluestone,copper 2+ sulfate pentahydrate,triangle,vencedor,blue copperas PubChem CID: 24463 ChEBI: CHEBI:31440 IUPAC Name: copper(2+) pentahydrate sulfate SMILES: O.O.O.O.O.[Cu++].[O-]S([O-])(=O)=O
Ricca Chemical Company Sodium Hydroxide, 30% (w/v), Ricca Chemical
CAS: 1310-73-2 Molecular Formula: HNaO Molecular Weight (g/mol): 39.997 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+]
Ricca Chemical Company Sodium Thiosulfate, 0.0500 N (N/20), Ricca Chemical
CAS: 10102-17-7 Molecular Formula: H10Na2O8S2 Molecular Weight (g/mol): 248.17 InChI Key: PODWXQQNRWNDGD-UHFFFAOYSA-L Synonym: sodium thiosulfate pentahydrate,ametox,sodium thiosulfate, pentahydrate,antichlor,tinver,disodium thiosulfate pentahydrate,unii-hx1032v43m,ccris 3952,thiosulfuric acid, disodium salt, pentahydrate,sodium hyposulfite pentahydrate PubChem CID: 61475 ChEBI: CHEBI:32150 IUPAC Name: disodium pentahydrate sulfanidesulfonate SMILES: O.O.O.O.O.[Na+].[Na+].[O-]S([S-])(=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 Sodium Thiosulfate, 0.100 N (N/10), Ricca Chemical
CAS: 10102-17-7 Molecular Formula: H10Na2O8S2 InChI Key: PODWXQQNRWNDGD-UHFFFAOYSA-L Synonym: sodium thiosulfate pentahydrate,ametox,sodium thiosulfate, pentahydrate,antichlor,tinver,disodium thiosulfate pentahydrate,unii-hx1032v43m,ccris 3952,thiosulfuric acid, disodium salt, pentahydrate,sodium hyposulfite pentahydrate PubChem CID: 61475 ChEBI: CHEBI:32150
Ricca Chemical Company EDTA Titrant, 0.0100 M (M/100), Ricca Chemical
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-[(carboxylatomethyl)(carboxymethyl)amino]ethyl}(carboxymethyl)amino)acetate dihydrate SMILES: O.O.[Na+].[Na+].OC(=O)CN(CCN(CC(O)=O)CC([O-])=O)CC([O-])=O
Potassium Pyroantimonate TS, Ricca Chemical
CAS: 7732-18-5 Synonym: dihydrogen oxide,dihydrogen monoxide
Ricca Chemical Company Sodium Hydroxide, 5.00 N, Ricca Chemical
CAS: 1310-73-2 Molecular Formula: HNaO Molecular Weight (g/mol): 39.997 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+]
Conductivity Standard, 50 μS/cm at 25°C (23.6 ppm TDS as NaCl), Ricca Chemical
CAS: 7647-14-5 Molecular Formula: ClNa Molecular Weight (g/mol): 58.44 MDL Number: MFCD00003477 InChI Key: FAPWRFPIFSIZLT-UHFFFAOYSA-M PubChem CID: 5234 ChEBI: CHEBI:26710 IUPAC Name: sodium chloride SMILES: [Na+].[Cl-]
Ricca Chemical Company Potassium Chloride, Saturated, Approximately 4 M, Ricca Chemical
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+]
Ricca Chemical Company Linear Alkylbenzene Sulfonate Standard, 1000 ppm LAS, Ricca Chemical
CAS: 7732-18-5 Synonym: dihydrogen oxide,dihydrogen monoxide