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
EDTA Titrant, 0.0575 M, 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
Ammonium Oxalate TS, 3.5% (w/v), Ricca Chemical
CAS: 6009-70-7 Molecular Formula: C2H10N2O5 Molecular Weight (g/mol): 142.111 InChI Key: MSMNVXKYCPHLLN-UHFFFAOYSA-N Synonym: ammonium oxalate monohydrate,ammonium oxalate monohydrate, acs,ethanedioic acid, diammonium salt, monohydrate,diazanium oxalate hydrate,acmc-1aw90,ksc493e5j,diammonium hydrate oxalate,oxalic acid ammonium salt monohydrate PubChem CID: 516808 IUPAC Name: diazanium;oxalate;hydrate SMILES: C(=O)(C(=O)[O-])[O-].[NH4+].[NH4+].O
Silver Nitrate, 0.0500 N (N/20), Ricca Chemical
CAS: 7761-88-8 Molecular Formula: AgNO3 Molecular Weight (g/mol): 169.87 MDL Number: MFCD00003414 InChI Key: SQGYOTSLMSWVJD-UHFFFAOYSA-N Synonym: silver nitrate,silvernitrate,lunar caustic,silbernitrat,argenti nitras,nitrate d'argent,nitric acid silver i salt,silver mononitrate,silver i nitrate,argerol PubChem CID: 24470 ChEBI: CHEBI:32130 IUPAC Name: silver(1+) nitrate SMILES: [Ag+].[O-][N+]([O-])=O
Potassium Hydroxide, 0.500 N (N/2) in Denatured Alcohol, Ricca Chemical
CAS: 1310-58-3 Molecular Formula: HKO Molecular Weight (g/mol): 56.11 MDL Number: MFCD00003553 InChI Key: KWYUFKZDYYNOTN-UHFFFAOYSA-M Synonym: potassium hydroxide,caustic potash,potash lye,potassium hydrate,hydroxyde de potassium,potassa,potasse caustique,potassium hydroxide k oh,potassium hydroxide solution,caswell no. 693 PubChem CID: 14797 ChEBI: CHEBI:32035 IUPAC Name: potassium hydroxide SMILES: [OH-].[K+]
Bromide Standard, 1000 ppm Br-, Ricca Chemical
CAS: 7647-15-6 Molecular Formula: BrNa Molecular Weight (g/mol): 102.89 MDL Number: MFCD00003475 InChI Key: JHJLBTNAGRQEKS-UHFFFAOYSA-M PubChem CID: 253881 ChEBI: CHEBI:63004 IUPAC Name: sodium bromide SMILES: [Na+].[Br-]
Sodium Thiosulfate, 0.0250 N (N/40), 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
EDTA Titrant, 0.100 M (M/10), 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
Copper Tetrammine, Ammoniacal Solution, 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
DPD Indicator Solution, for Residual Chlorine Analysis, Ricca Chemical
For Analysis of Residual Chlorine Analysis
1,10-Phenanthroline, 0.1% (w/v), Ricca Chemical
CAS: 5144-89-8 Molecular Formula: C12H10N2O Molecular Weight (g/mol): 198.23 MDL Number: MFCD00149973 InChI Key: PPQJCISYYXZCAE-UHFFFAOYSA-N PubChem CID: 21226 IUPAC Name: 1,10-phenanthroline hydrate SMILES: O.C1=CN=C2C(C=CC3=CC=CN=C23)=C1
Potassium Chloride, 4 M, saturated with Silver Chloride, Electrode Filling Solution, 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+]
Iodine (Iodine-Iodide), 0.100 N (N/10), Ricca Chemical
CAS: 7553-56-2 Molecular Formula: I2 Molecular Weight (g/mol): 253.81 MDL Number: MFCD00011355 MFCD00164163 InChI Key: PNDPGZBMCMUPRI-UHFFFAOYSA-N Synonym: iodine,diiodine,iodine crystals,iodine sublimed,tincture iodine,vistarin,eranol,iodio,iodine solution,iode PubChem CID: 807 ChEBI: CHEBI:17606 IUPAC Name: diiodine SMILES: II
Ferrous Ammonium Sulfate, 0.00282 N (0.00282 M), 1 mL = 0.1 mg Cl2, Ricca Chemical
CAS: 7783-85-9 Molecular Formula: FeH20N2O14S2 Molecular Weight (g/mol): 392.13 MDL Number: MFCD00150530 InChI Key: MQLVWQSVRZVNIP-UHFFFAOYSA-L IUPAC Name: λ2-iron(2+) diammonium hexahydrate disulfate SMILES: [NH4+].[NH4+].O.O.O.O.O.O.[Fe++].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O
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+]