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Acids

Organic and inorganic acids suitable for a wide variety of laboratory applications. Products are available in solid and liquid forms and in various pH values, quantities, reagent grades, and purities.

Acids are defined as substances that have a sour taste, a low pH (<7), and cause litmus paper to turn red. They also react with bases (yielding water and ionic compounds called salts) and produce hydrogen gas when used to dissolve metals such as zinc and iron.

Chemically, an acid is a molecule or ion that acts as a proton or hydrogen ion donor (Brønsted-Lowry acid) in a non-aqueous solution. In water, acids form hydronium ions (H3O+).

An acid is alternatively defined as a molecule or ion that accepts an electron pair (Lewis acid). One example is trifluoroborane, which has a boron atom capable of accepting an electron pair from ammonia (NH3) to form NH3-BF3.

Common inorganic acids include hydrochloric, sulfuric, nitric, and phosphoric acids. Common organic acids include acetic, benzoic, citric, and lactic acids.

In the laboratory, acids are used as reagents or catalysts in many types of chemical reactions.

Strong acids, such as sulfuric and hydrochloric acid, are highly corrosive and have extensive commercial applications.

  • Sulfuric acid is used to process petroleum and minerals and to make other chemicals like nitric acid
  • Hydrochloric acid is used to pickle steel and other metals
  • Some acids are used as neutralizers to produce salts; for example, ammonium nitrate is produced by the reaction of nitric acid with ammonia
  • Many acids are also used in the food and beverage industry

Do you need bulk and custom chemical solutions? Ask our Fisher Scientific Chemical Specialists.

Inorganic Acids (523)
Organic Acids (668)

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1

12-Molybdophosphoric acid hydrate, Mo >47.5%

CAS: 51429-74-4 Molecular Formula: H3Mo12O40P Molecular Weight (g/mol): 1825.40 MDL Number: MFCD00149913 InChI Key: FEFSFHGZSNHJEL-UHFFFAOYSA-N Synonym: Molybdophosphoric acid IUPAC Name: phosphoric acid dodecamolybdenum hexatriacontaoxidandiide SMILES: [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].OP(O)(O)=O

CAS 51429-74-4
Molecular Weight (g/mol) 1825.40
MDL Number MFCD00149913
SMILES [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].OP(O)(O)=O
Synonym Molybdophosphoric acid
IUPAC Name phosphoric acid dodecamolybdenum hexatriacontaoxidandiide
InChI Key FEFSFHGZSNHJEL-UHFFFAOYSA-N
Molecular Formula H3Mo12O40P
2

Sulfuric Acid Min 95%, for Electronic Use (MOS), Fisher Chemical™

CAS: 7664-93-9 Molecular Formula: H2O4S Molecular Weight (g/mol): 98.07 MDL Number: MFCD00064589 InChI Key: QAOWNCQODCNURD-UHFFFAOYSA-N Synonym: oil of vitriol,sulphuric acid,dihydrogen sulfate,mattling acid,battery acid,dipping acid,acide sulfurique,electrolyte acid,acidum sulfuricum,vitriol brown oil PubChem CID: 1118 ChEBI: CHEBI:26836 IUPAC Name: sulfuric acid SMILES: OS(O)(=O)=O

PubChem CID 1118
CAS 7664-93-9
Molecular Weight (g/mol) 98.07
ChEBI CHEBI:26836
MDL Number MFCD00064589
SMILES OS(O)(=O)=O
Synonym oil of vitriol,sulphuric acid,dihydrogen sulfate,mattling acid,battery acid,dipping acid,acide sulfurique,electrolyte acid,acidum sulfuricum,vitriol brown oil
IUPAC Name sulfuric acid
InChI Key QAOWNCQODCNURD-UHFFFAOYSA-N
Molecular Formula H2O4S
4

Sulfurous acid, ACS, 6.0% SO{2} min

CAS: 7782-99-2 Molecular Formula: H2O3S Molecular Weight (g/mol): 82.073 MDL Number: MFCD00011335 InChI Key: LSNNMFCWUKXFEE-UHFFFAOYSA-N Synonym: sulphurous acid,sulfur dioxide solution,schweflige saure german,h2so3,unii-j1p7893f4j,schweflige saure,acide sulfureux,acido sulfuroso,schweflige saeure,trioxosulfuric acid PubChem CID: 1100 ChEBI: CHEBI:48854 IUPAC Name: sulfurous acid SMILES: OS(=O)O

PubChem CID 1100
CAS 7782-99-2
Molecular Weight (g/mol) 82.073
ChEBI CHEBI:48854
MDL Number MFCD00011335
SMILES OS(=O)O
Synonym sulphurous acid,sulfur dioxide solution,schweflige saure german,h2so3,unii-j1p7893f4j,schweflige saure,acide sulfureux,acido sulfuroso,schweflige saeure,trioxosulfuric acid
IUPAC Name sulfurous acid
InChI Key LSNNMFCWUKXFEE-UHFFFAOYSA-N
Molecular Formula H2O3S
5

Hydrogen chloride, 5 to 6N solution in 2-propanol, AcroSeal™

CAS: 7647-01-0 | ClH | 36.46 g/mol

Linear Formula HCl
Molecular Weight (g/mol) 36.46
ChEBI CHEBI:17883
InChI Key VEXZGXHMUGYJMC-UHFFFAOYSA-N
Density 0.9090g/mL
PubChem CID 313
Name Note 5 to 6N solution in 2-propanol
Formula Weight 36.45
Color Colorless to Yellow
Physical Form Liquid
Chemical Name or Material Hydrochloric acid
SMILES Cl
Merck Index 14, 4794
Concentration 5N min.
CAS 67-63-0
Health Hazard 3 GHS P Statement:
Wear eye protection/face protection.
IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing.
IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Avoid breathing dust/fume/gas/mist/vapors/spray.
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 MFCD00011324 MFCD00792839
Health Hazard 2 GHS H Statement:
Causes severe skin burns and eye damage.
May cause drowsiness or dizziness.
Harmful if inhaled.
Highly flammable liquid and vapor.
Solubility Information Solubility in water: >1000g/L (20°C). Other solubilities: soluble in methanol, ethanol, 2-propanol: >50g/L
Flash Point 11°C
Packaging AcroSeal™ Glass Bottle
Health Hazard 1 Danger
Synonym hydrochloric acid,hydrogen chloride,muriatic acid,chlorohydric acid,acide chlorhydrique,chlorwasserstoff,spirits of salt,hydrogen chloride hcl,anhydrous hydrochloric acid,chloorwaterstof
IUPAC Name chlorane
Molecular Formula ClH
Specific Gravity 0.909
6

2-Amino-4-chloro-5-methylbenzenesulfonic Acid, TRC

CAS: 88-51-7 Molecular Formula: C7 H8 Cl N O3 S Molecular Weight (g/mol): 221.66 Synonym: 2-Amino-4-chloro-5-methylbenzenesulfonic Acid,1-Amino-3-chloro-4-methylbenzene-6-sulfonic Acid,1-Amino-4-methyl-5-chlorobenzene-2-sulfonic Acid,2-Amino-4-chloro-5-methyl-1-benzenesulfonic Acid,2-Chloro-4-aminotoluene-5-sulfonic Acid,2-Chloro-4-toluidine-5-sulfonic Acid,2-Chloro-p-toluidine-5-sulfonic Acid,2B Acid,3-Chloro-4-methylaniline-6-sulfonic Acid,4-Amino-2-chlorotoluene-5-sulfonic Acid,4-Amino-6-chlorotoluene-3-sulfonic Acid,6-Amino-4-chloro-m-toluenesulfonic Acid,Brilliant Toning Red Amine IUPAC Name: 2-amino-4-chloro-5-methyl-benzenesulfonic acid SMILES: Cc1cc(c(N)cc1Cl)S(=O)(=O)O

CAS 88-51-7
Molecular Weight (g/mol) 221.66
SMILES Cc1cc(c(N)cc1Cl)S(=O)(=O)O
Synonym 2-Amino-4-chloro-5-methylbenzenesulfonic Acid,1-Amino-3-chloro-4-methylbenzene-6-sulfonic Acid,1-Amino-4-methyl-5-chlorobenzene-2-sulfonic Acid,2-Amino-4-chloro-5-methyl-1-benzenesulfonic Acid,2-Chloro-4-aminotoluene-5-sulfonic Acid,2-Chloro-4-toluidine-5-sulfonic Acid,2-Chloro-p-toluidine-5-sulfonic Acid,2B Acid,3-Chloro-4-methylaniline-6-sulfonic Acid,4-Amino-2-chlorotoluene-5-sulfonic Acid,4-Amino-6-chlorotoluene-3-sulfonic Acid,6-Amino-4-chloro-m-toluenesulfonic Acid,Brilliant Toning Red Amine
IUPAC Name 2-amino-4-chloro-5-methyl-benzenesulfonic acid
Molecular Formula C7 H8 Cl N O3 S
7

1,2,4-Benzenetricarboxylic Acid 1,2-Bis(2-ethylhexyl) Ester, TRC

CAS: 63468-09-7 Molecular Formula: C25 H38 O6 Molecular Weight (g/mol): 434.57 IUPAC Name: 3,4-bis(2-ethylhexoxycarbonyl)benzoic acid SMILES: CCCCC(CC)COC(=O)c1ccc(cc1C(=O)OCC(CC)CCCC)C(=O)O

CAS 63468-09-7
Molecular Weight (g/mol) 434.57
SMILES CCCCC(CC)COC(=O)c1ccc(cc1C(=O)OCC(CC)CCCC)C(=O)O
IUPAC Name 3,4-bis(2-ethylhexoxycarbonyl)benzoic acid
Molecular Formula C25 H38 O6
8

Oxalic acid solution, Volumetric, 0.5 M (COOH)2 (1N), Solstice

CAS: 144-62-7 Molecular Formula: C2H2O4 Molecular Weight (g/mol): 90.034 InChI Key: MUBZPKHOEPUJKR-UHFFFAOYSA-N Synonym: ethanedioic acid,aktisal,aquisal,oxiric acid,oxalate,oxalsaeure,oxaalzuur,kyselina stavelova,acide oxalique,acido ossalico PubChem CID: 971 ChEBI: CHEBI:16995 IUPAC Name: oxalic acid SMILES: C(=O)(C(=O)O)O

PubChem CID 971
CAS 144-62-7
Molecular Weight (g/mol) 90.034
ChEBI CHEBI:16995
SMILES C(=O)(C(=O)O)O
Synonym ethanedioic acid,aktisal,aquisal,oxiric acid,oxalate,oxalsaeure,oxaalzuur,kyselina stavelova,acide oxalique,acido ossalico
IUPAC Name oxalic acid
InChI Key MUBZPKHOEPUJKR-UHFFFAOYSA-N
Molecular Formula C2H2O4
10

Phosphomolybdic Acid hydrate, ACS Reagent

CAS: 51429-74-4 Molecular Formula: H3Mo12O40P Molecular Weight (g/mol): 1825.40 MDL Number: MFCD00149913 InChI Key: FEFSFHGZSNHJEL-UHFFFAOYSA-N IUPAC Name: phosphoric acid dodecamolybdenum hexatriacontaoxidandiide SMILES: [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].OP(O)(O)=O

CAS 51429-74-4
Molecular Weight (g/mol) 1825.40
MDL Number MFCD00149913
SMILES [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].OP(O)(O)=O
IUPAC Name phosphoric acid dodecamolybdenum hexatriacontaoxidandiide
InChI Key FEFSFHGZSNHJEL-UHFFFAOYSA-N
Molecular Formula H3Mo12O40P
11

Phosphomolybdic acid hydrate, 80%

CAS: 51429-74-4 Molecular Formula: H3Mo12O40P Molecular Weight (g/mol): 1825.40 MDL Number: MFCD00149913 InChI Key: FEFSFHGZSNHJEL-UHFFFAOYSA-N Synonym: Molybdophosphoric acid IUPAC Name: phosphoric acid dodecamolybdenum hexatriacontaoxidandiide SMILES: [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].OP(O)(O)=O

CAS 51429-74-4
Molecular Weight (g/mol) 1825.40
MDL Number MFCD00149913
SMILES [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].OP(O)(O)=O
Synonym Molybdophosphoric acid
IUPAC Name phosphoric acid dodecamolybdenum hexatriacontaoxidandiide
InChI Key FEFSFHGZSNHJEL-UHFFFAOYSA-N
Molecular Formula H3Mo12O40P
12

Phosphomolybdic acid, ammonium salt hydrate

CAS: 54723-94-3 Molecular Formula: H80Mo12N3O41P-6 Molecular Weight (g/mol): 1960.994 MDL Number: MFCD00150423 InChI Key: BIQVMZMYTFVCJZ-UHFFFAOYSA-H Synonym: ammonium phosphomolybdate hydrate PubChem CID: 131664298 IUPAC Name: azane;molybdenum;trihydroxide;phosphate;tetratriacontahydrate SMILES: N.N.N.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.[OH-].[OH-].[OH-].[O-]P(=O)([O-])[O-].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo]

PubChem CID 131664298
CAS 54723-94-3
Molecular Weight (g/mol) 1960.994
MDL Number MFCD00150423
SMILES N.N.N.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.[OH-].[OH-].[OH-].[O-]P(=O)([O-])[O-].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo]
Synonym ammonium phosphomolybdate hydrate
IUPAC Name azane;molybdenum;trihydroxide;phosphate;tetratriacontahydrate
InChI Key BIQVMZMYTFVCJZ-UHFFFAOYSA-H
Molecular Formula H80Mo12N3O41P-6
13

Reserpine, 99%, Thermo Scientific Chemicals

CAS: 50-55-5 Molecular Formula: C33H40N2O9 Molecular Weight (g/mol): 608.688 MDL Number: MFCD00005091 InChI Key: QEVHRUUCFGRFIF-MDEJGZGSSA-N Synonym: reserpine,serpalan,serpasil,serpivite,apoplon,deserpine,elserpine,hiserpia,hypersil,raunervil PubChem CID: 5770 ChEBI: CHEBI:28487 IUPAC Name: methyl (1R,15S,17R,18R,19S,20S)-6,18-dimethoxy-17-(3,4,5-trimethoxybenzoyl)oxy-1,3,11,12,14,15,16,17,18,19,20,21-dodecahydroyohimban-19-carboxylate SMILES: COC1C(CC2CN3CCC4=C(C3CC2C1C(=O)OC)NC5=C4C=CC(=C5)OC)OC(=O)C6=CC(=C(C(=C6)OC)OC)OC

PubChem CID 5770
CAS 50-55-5
Molecular Weight (g/mol) 608.688
ChEBI CHEBI:28487
MDL Number MFCD00005091
SMILES COC1C(CC2CN3CCC4=C(C3CC2C1C(=O)OC)NC5=C4C=CC(=C5)OC)OC(=O)C6=CC(=C(C(=C6)OC)OC)OC
Synonym reserpine,serpalan,serpasil,serpivite,apoplon,deserpine,elserpine,hiserpia,hypersil,raunervil
IUPAC Name methyl (1R,15S,17R,18R,19S,20S)-6,18-dimethoxy-17-(3,4,5-trimethoxybenzoyl)oxy-1,3,11,12,14,15,16,17,18,19,20,21-dodecahydroyohimban-19-carboxylate
InChI Key QEVHRUUCFGRFIF-MDEJGZGSSA-N
Molecular Formula C33H40N2O9
14

Phosphomolybdic acid, 20 wt% solution in ethanol

CAS: 51429-74-4 | H3Mo12O40P | 1825.40 g/mol

Linear Formula H3[P(Mo3O10)4]
Molecular Weight (g/mol) 1825.40
Color Green to Yellow
Physical Form Solution
Chemical Name or Material Phosphomolybdic acid
SMILES [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].OP(O)(O)=O
Merck Index 13, 7428
InChI Key FEFSFHGZSNHJEL-UHFFFAOYSA-N
Density 0.9400 g/mL
Name Note 20 wt% solution in ethanol
Percent Purity 19 to 21%
CAS 64-17-5
Health Hazard 3 GHS P Statement:
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.
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 MFCD00149913
Health Hazard 2 GHS H Statement:
Causes severe skin burns and eye damage.
Highly flammable liquid and vapor.
Flash Point 5°C
Packaging Plastic Bottle
Health Hazard 1 GHS Signal Word: Danger
Synonym Molybdophosphoric acid
IUPAC Name phosphoric acid dodecamolybdenum hexatriacontaoxidandiide
Molecular Formula H3Mo12O40P
Formula Weight 1825.25
Specific Gravity 94%
15

12-Molybdophosphoric acid hydrate, ACS

CAS: 51429-74-4 Molecular Formula: H3Mo12O40P Molecular Weight (g/mol): 1825.40 MDL Number: MFCD00149913 InChI Key: FEFSFHGZSNHJEL-UHFFFAOYSA-N Synonym: Phosphomolybdic acid IUPAC Name: phosphoric acid dodecamolybdenum hexatriacontaoxidandiide SMILES: [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].OP(O)(O)=O

CAS 51429-74-4
Molecular Weight (g/mol) 1825.40
MDL Number MFCD00149913
SMILES [O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[O--].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].[Mo].OP(O)(O)=O
Synonym Phosphomolybdic acid
IUPAC Name phosphoric acid dodecamolybdenum hexatriacontaoxidandiide
InChI Key FEFSFHGZSNHJEL-UHFFFAOYSA-N
Molecular Formula H3Mo12O40P