Polymer intermediates
Attributed industrial references identify glutaric acid as a chemical intermediate for polyamides and polyesters. [3]
01
THE ESSENTIALS
Glutaric Acid in 30 Seconds
Two terminal COOH groups flank a three-carbon methylene spacer. There is no additional hydroxyl group, carbon–carbon double bond or stereocenter in this free-acid identity.
Glutaric acid is the five-carbon saturated diacid, with three methylene groups between its carboxyl groups. Neat solid and aqueous-solution products require separate specifications. [1] [3]
Safety at a glance — TCI identifies skin and eye irritation, while Merck 800295 classifies its glutaric-acid product as causing severe skin burns and eye damage. Retain the exact-product difference and do not reduce all glutaric-acid handling to an irritation-only summary. Avoid dust exposure, and treat decomposition-qualified high-temperature references separately from a safe distillation claim. [4] [5] [6]
A condensed structural formula keeps the functional groups visible. [1]
02
GO A LITTLE DEEPER
Understanding Glutaric Acid
THE SIMPLE EXPLANATION
The functional groups
Two terminal COOH groups flank a three-carbon methylene spacer. There is no additional hydroxyl group, carbon–carbon double bond or stereocenter in this free-acid identity. [1]
A LITTLE DEEPER
What the structure changes
The two acidic groups dissociate in separate steps. Salt formation and condensation chemistry therefore involve a bifunctional molecule. A titration measures acid equivalents; it does not independently establish chromatographic composition or the absence of another diacid. [1] [12]
Technical detail Identity, dissociation & specification
The neutral free-acid formula, connectivity and specified geometric identity are distinct from a salt, ester, polymer or anhydride. Numeric pKa is not promoted where retrieved conditions or conflicting measurements remain insufficiently resolved. [1] [2] [4] [5] [6]
Acid–base reference values describe equilibria under specified conditions. They are not a substitute for a validated formulation or an assay on the purchased lot.
03
MAKE THE CONNECTION
How Glutaric Acid Compares
Similar names and functional groups do not mean interchangeable chemicals.
SIDE-BY-SIDE COMPARISON
Glutaric Acid vs Succinic Acid
Saturated aliphatic dicarboxylic acid
versusDicarboxylic acid
Fixed comparison for this prototype. Acid selectors are disabled; additional comparisons are coming later.
| Property | Glutaric Acid | Succinic Acid |
|---|---|---|
| Molecular formula | C₅H₈O₄ [1] | C₄H₆O₄ [7] |
| Molecular weight | 132.11 g/mol [1] | 118.09 g/mol [7] |
| Carbon atoms | 5 [1] | 4 [7] |
| Carboxyl groups | 2 [1] | 2 [7] |
| Structure | HOOC–(CH₂)₃–COOH [1] | HOOC–CH₂–CH₂–COOH [7] |
| Chemical family | Saturated aliphatic dicarboxylic acid [1] | Dicarboxylic acid [7] |
| Identity focus | Free acid [1] | Solid [7] |
Chemical identities are compared here; supplier grades, concentrations, and stereochemical specifications are separate purchasing attributes. pKa values retain their stated conditions; no quantitative solubility ranking is implied.
When Might You Choose One Instead of the Other?
Select the diacid spacer required by the polymer or synthesis. Confirm neat solid versus solution, water limits and impurity methods before evaluating packages. Use succinic or adipic acid only where the target and process permit those different carbon frameworks. [1] [3] [7]
Specified starting material
Glutaric Acid
Match HOOC–(CH₂)₃–COOH and the method’s required chemical form.
Succinic Acid
Match HOOC–CH₂–CH₂–COOH; verify the identity before substituting a related acid.
Before choosing: match the reaction or formulation, then verify the exact form, grade, assay basis, and impurities. These contexts do not establish suitability for an industrial or regulated application.
04
FROM STRUCTURE TO APPLICATION
What Is Glutaric Acid Used For?
Polymer intermediates
Attributed industrial references identify glutaric acid as a chemical intermediate for polyamides and polyesters. The resulting polymer supplies the material performance. [3]
Ester and anhydride synthesis
Glutaric acid is an intermediate for its esters and anhydride. These derivatives have different identities and use specifications from the free acid. [3]
06
SOURCE WITH CONTEXT
Glutaric Acid Suppliers
Compare specific products and package options. Listings are not ranked recommendations.
3 suppliers · 3 products · 7 package listingsLatest supplier check: October 3, 2026
Package sizes stay grouped under the supplier product. Assay methods, product forms, and regional markets remain visible. The displayed products are neat solids. TCI G0245 is a different commercial form with 50–55% w/w concentration by titration; that is not 50–55% chemical purity and it is excluded from the neat-product table. Merck acidimetric assay and TCI GC are distinct measurements.
Scroll horizontally if needed. Supplier and package identity stay visible.
| Supplier | Product / Grade | Purity / Assay | Package Size | Public Price | Normalized Price | Documentation | Last Checked | Action |
|---|---|---|---|---|---|---|---|---|
| TCI AmericaGlutaric Acid | Named grade not statedG0069 · 25 gNeat solid. Separate G0245 is a 50–55% w/w aqueous solution by titration and is excluded from this comparison. | GC: minimum 99.0% Neutralization titration: minimum 99.0% | 25 g | $17.00USD · US public price | Not comparedGrades, assay bases, or forms differ | Document notes: TCI America
| View Product: TCI America, G0069 · 25 g (opens new tab) | |
| Named grade not statedG0069 · 500 gNeat solid. Separate G0245 is a 50–55% w/w aqueous solution by titration and is excluded from this comparison. | GC: minimum 99.0% Neutralization titration: minimum 99.0% | 500 g | $106.00USD · US public price | Not comparedGrades, assay bases, or forms differ | View Product: TCI America, G0069 · 500 g (opens new tab) | |||
| Sigma-Aldrich / MerckGlutaric Acid | For synthesis8002950100Acid-equivalent titration does not establish a GC or HPLC composition percentage. | ≥99.0% (acidimetric; manufacturer analysis note: mass basis) | 100 g | $87.50USD · US public price | Not comparedGrades, assay bases, or forms differ | Document notes: Sigma-Aldrich / Merck
| View Product: Sigma-Aldrich / Merck, 8002950100 (opens new tab) | |
| For synthesis8002950250Acid-equivalent titration does not establish a GC or HPLC composition percentage. | ≥99.0% (acidimetric; manufacturer analysis note: mass basis) | 250 g | $173.00USD · US public price | Not comparedGrades, assay bases, or forms differ | View Product: Sigma-Aldrich / Merck, 8002950250 (opens new tab) | |||
| For synthesis8002951000Acid-equivalent titration does not establish a GC or HPLC composition percentage. | ≥99.0% (acidimetric; manufacturer analysis note: mass basis) | 1 kg | $497.00USD · US public price | Not comparedGrades, assay bases, or forms differ | View Product: Sigma-Aldrich / Merck, 8002951000 (opens new tab) | |||
| FUJIFILM WakoGlutaric Acid | Wako Special Grade078-00542Research / further manufacturing. Japan stock does not confirm US availability. 500 g listing showed out of stock; a public price does not establish availability. | 98.0+% (Titration) | 25 g | $45.00USD · US catalog list price | Not comparedGrades, assay bases, or forms differ | Document notes: FUJIFILM Wako
| View Product: FUJIFILM Wako, 078-00542 (opens new tab) | |
| Wako Special Grade072-00545Research / further manufacturing. Japan stock does not confirm US availability. 500 g listing showed out of stock; a public price does not establish availability. | 98.0+% (Titration) | 500 g | $321.00USD · US catalog list price | Not comparedGrades, assay bases, or forms differ | View Product: FUJIFILM Wako, 072-00545 (opens new tab) |
TCI America
Glutaric Acid
Neutralization titration: minimum 99.0%
Named grade not stated
Neat solid. Separate G0245 is a 50–55% w/w aqueous solution by titration and is excluded from this comparison.
25 g
G0069 · 25 g- Public price
- $17.00USD · US public price
- Normalized price
- Not comparedGrades, assay bases, or forms differ
500 g
G0069 · 500 g- Public price
- $106.00USD · US public price
- Normalized price
- Not comparedGrades, assay bases, or forms differ
Documentation
Document notes: TCI America
- A product-specific certificate retrieval option was visible; no lot certificate was reviewed. Open the product page and use its certificate section.
- A current regional SDS was not verified in this pass.
- Origin-document availability was not verified. Country of origin is unverified and is not inferred.
Last checked:
Sigma-Aldrich / Merck
Glutaric Acid
For synthesis
Acid-equivalent titration does not establish a GC or HPLC composition percentage.
100 g
8002950100- Public price
- $87.50USD · US public price
- Normalized price
- Not comparedGrades, assay bases, or forms differ
250 g
8002950250- Public price
- $173.00USD · US public price
- Normalized price
- Not comparedGrades, assay bases, or forms differ
1 kg
8002951000- Public price
- $497.00USD · US public price
- Normalized price
- Not comparedGrades, assay bases, or forms differ
Documentation
Document notes: Sigma-Aldrich / Merck
- A product-specific certificate retrieval option was visible; no lot certificate was reviewed. Open the product page and use its certificate section.
- A current regional SDS was not verified in this pass.
- Origin-document availability was not verified. Country of origin is unverified and is not inferred.
Last checked:
FUJIFILM Wako
Glutaric Acid
Wako Special Grade
Research / further manufacturing. Japan stock does not confirm US availability. 500 g listing showed out of stock; a public price does not establish availability.
25 g
078-00542- Public price
- $45.00USD · US catalog list price
- Normalized price
- Not comparedGrades, assay bases, or forms differ
500 g
072-00545- Public price
- $321.00USD · US catalog list price
- Normalized price
- Not comparedGrades, assay bases, or forms differ
Documentation
Document notes: FUJIFILM Wako
- A product-specific certificate retrieval option was visible; no lot certificate was reviewed. Open the product page and use its certificate section.
- A current regional SDS was not verified in this pass.
- Origin-document availability was not verified. Country of origin is unverified and is not inferred.
Last checked:
Documentation evidence
COA = Certificate of Analysis · SDS = Safety Data Sheet · COO = Certificate of Origin.
Lookup means a retrieval option was visible, not that a lot certificate was reviewed. Check supplier means availability or the applicable document was not verified.
Prices may vary by quantity, account, contract, geography, and availability. These products have different grades, assay bases, or forms; no normalized comparison is shown. Foreign-market prices are reference listings only. No currency conversion, mass-to-volume conversion, or ranking is applied. Confirm equivalent specifications and a current quote before comparison. [4] [5] [6]
Verification limits & placement policy
pKa: CONDITION-DEPENDENT. IUPAC aqueous compilation contains different approximate stepwise constants at 20/25 °C and different concentrations/ionic strengths, including explicitly concentration-based constants in NaClO₄. These cannot be collapsed into a universal pair. Main numeric field omitted. Water solubility: CONFLICT UNRESOLVED. TCI/HSDB lists 639 g/L at 20 °C; another compiled entry lists 1600 g/L at 28 °C. Temperature, solvent-versus-solution basis and method are not sufficiently matched to resolve the magnitude difference. Numeric main field omitted. Boiling behavior: CONDITION-DEPENDENT. 200 °C at 20 mmHg and 302–304 °C at 1013 hPa are different-pressure references; the latter explicitly has slow decomposition. Neither is a safe distillation procedure. Solution concentration: VERIFIED. Separate TCI G0245 specifies 50–55% w/w by neutralization titration; it is not included as a neat 99% assay product.
Only the displayed identity, specification, packages, public prices and stated documentation evidence were reviewed. Current stock, lead times, shipping eligibility, contract pricing, lot certificates, and regulatory suitability are unverified.
There are no paid placements. Future paid listings will show “Sponsored” in both views; payment will not determine chemistry interpretation or imply a ranking.
07
PLAN A LARGER ORDER
Need Glutaric Acid in Bulk?
Turn your requirements into a clear supplier brief.
Bulk RFQ feature — coming soon. Prototype form: submissions are not currently sent to suppliers. Use sample details to prepare an on-screen brief.
Prepare a bulk request Prototype form
08
A BUYER’S CHECKLIST
Before You Buy Glutaric Acid
Selections remain only while this page is open.
09
FOR YOUR REFERENCE
Glutaric Acid Technical Reference
Identity, product reference properties, and handling context.
Identification Names, formula & identifiers
- Principal CAS
- 110-94-1
- Identity focus
- Free acid
- Formula
- C₅H₈O₄
- Molecular weight
- 132.11 g/mol
- IUPAC name
- pentanedioic acid
- Connectivity SMILES
- C(CC(=O)O)CC(=O)O
- Identity SMILES
- C(CC(=O)O)CC(=O)O
- InChI
- InChI=1S/C5H8O4/c6-4(7)2-1-3-5(8)9/h1-3H2,(H,6,7)(H,8,9)
- PubChem CID
- 743
Connectivity SMILES describes connectivity; it is not an independent stereochemical assignment. CAS and product-form distinctions are supported by the supplier listings. [1] [4] [5] [6]
Physical Properties Product references & conditions
Solid at 20 °C. Aqueous concentration belongs to a solution product; it must not be confused with the identity or assay of this neat solid. [13] [4] [5]
- Melting reference
- 97.5–98 °C; Merck Index (1976), attributed in HSDB [13]
- Reduced-pressure boiling reference
- 200 °C at 20 mmHg; Merck Index (1976) via HSDB and TCI G0069. Not an atmospheric boiling point. [13]
- Atmospheric heating reference
- 302–304 °C at 1013 hPa, with slow decomposition; Merck 800295 product reference [5]
- Solid density
- 1.43 g/cm³ at 15 °C; Merck 800295 product reference. Distinct from bulk density. [5]
Hydrate, concentration, stereoisomer, and temperature can change the relevant specification. Product reference data are not a reviewed lot certificate.
Acid/Base Properties Verified values & missing data
A numeric pKa was not verified for the selected identity in this review; no value is inferred. [2]
pKa: CONDITION-DEPENDENT. IUPAC aqueous compilation contains different approximate stepwise constants at 20/25 °C and different concentrations/ionic strengths, including explicitly concentration-based constants in NaClO₄. These cannot be collapsed into a universal pair. Main numeric field omitted. Water solubility: CONFLICT UNRESOLVED. TCI/HSDB lists 639 g/L at 20 °C; another compiled entry lists 1600 g/L at 28 °C. Temperature, solvent-versus-solution basis and method are not sufficiently matched to resolve the magnitude difference. Numeric main field omitted. Boiling behavior: CONDITION-DEPENDENT. 200 °C at 20 mmHg and 302–304 °C at 1013 hPa are different-pressure references; the latter explicitly has slow decomposition. Neither is a safe distillation procedure. Solution concentration: VERIFIED. Separate TCI G0245 specifies 50–55% w/w by neutralization titration; it is not included as a neat 99% assay product.
Temperature, ionic strength, and the use of activities versus concentrations matter in quantitative work. These reference values are not buffer recipes.
Safety at a Glance Product-specific hazards
TCI identifies skin and eye irritation, while Merck 800295 classifies its glutaric-acid product as causing severe skin burns and eye damage. Retain the exact-product difference and do not reduce all glutaric-acid handling to an irritation-only summary. Avoid dust exposure, and treat decomposition-qualified high-temperature references separately from a safe distillation claim. [4] [5] [6]
Hazard classifications can vary by concentration, product, supplier and jurisdiction. Review the SDS for the exact product before handling. This summary does not replace the SDS.
Supplier safety information and SDS retrieval (opens new tab)
A product-page safety classification is not verification of every regional SDS. Confirm product code, chemical form and current local document.
Review supplier documentation10
COMMON QUESTIONS
Glutaric Acid FAQ
What distinguishes Glutaric Acid?
Two terminal COOH groups flank a three-carbon methylene spacer. There is no additional hydroxyl group, carbon–carbon double bond or stereocenter in this free-acid identity. [1]
How does it differ from Succinic Acid?
Glutaric acid adds one methylene to succinic acid and has one fewer than adipic acid. The spacer length changes the residue incorporated in a polyester or polyamide; the acids are not interchangeable solely because each has two COOH groups. [7]
What must a buyer specify?
The displayed products are neat solids. TCI G0245 is a different commercial form with 50–55% w/w concentration by titration; that is not 50–55% chemical purity and it is excluded from the neat-product table. Merck acidimetric assay and TCI GC are distinct measurements. [4]
Are the listed products directly price-comparable?
No. The table retains differing grades, assay bases, forms, and markets. No normalized ranking or currency conversion is applied. [5]
What reference data still need checking?
pKa: CONDITION-DEPENDENT. IUPAC aqueous compilation contains different approximate stepwise constants at 20/25 °C and different concentrations/ionic strengths, including explicitly concentration-based constants in NaClO₄. These cannot be collapsed into a universal pair. Main numeric field omitted. Water solubility: CONFLICT UNRESOLVED. TCI/HSDB lists 639 g/L at 20 °C; another compiled entry lists 1600 g/L at 28 °C. Temperature, solvent-versus-solution basis and method are not sufficiently matched to resolve the magnitude difference. Numeric main field omitted. Boiling behavior: CONDITION-DEPENDENT. 200 °C at 20 mmHg and 302–304 °C at 1013 hPa are different-pressure references; the latter explicitly has slow decomposition. Neither is a safe distillation procedure. Solution concentration: VERIFIED. Separate TCI G0245 specifies 50–55% w/w by neutralization titration; it is not included as a neat 99% assay product.
Can I request a bulk quote here?
The RFQ is a prototype that prepares an on-screen brief. Nothing is sent to suppliers. Confirm actual bulk terms directly with the supplier.
11
TRACE THE INFORMATION
Sources & Editorial Notes
Identity and compiled reference values are separated from supplier-specific specifications. Structural comparisons and buyer guidance are editorial interpretation. Sources were checked October 3, 2026; supplier information can change.
- PubChem · chemical identity (opens new tab)
Neutral molecular identity verified independently through PUG REST; CAS also checked on all selected supplier products.
- PubChem / HSDB · dissociation references (opens new tab)
No numeric field promoted: insufficient conditions or unresolved conflicting records.
- PubChem / HSDB · application references (opens new tab)
Attributed application records reviewed claim by claim. Free acid, intermediate, derivative and biological context are distinguished.
- TCI America · commercial product (opens new tab)
Direct product checked October 3, 2026. Identity, listed assay methods, packages, market, prices and documentation interfaces inspected. Lot certificates and stock are not verified.
- Sigma-Aldrich / Merck · commercial product (opens new tab)
Direct product checked October 3, 2026. Identity, listed assay methods, packages, market, prices and documentation interfaces inspected. Lot certificates and stock are not verified.
- FUJIFILM Wako · commercial product (opens new tab)
Direct product checked October 3, 2026. Identity, listed assay methods, packages, market, prices and documentation interfaces inspected. Lot certificates and stock are not verified.
- Succinic Acid · identity (opens new tab)
Primary structural comparison. Practical interpretation does not establish suitability.
- Adipic Acid · identity (opens new tab)
Related identity and structural relationship.
- Malonic Acid · identity (opens new tab)
Related identity and structural relationship.
- Maleic Acid · identity (opens new tab)
Related identity and structural relationship.
- Succinic Acid · dissociation references (opens new tab)
Only independently reviewed values are promoted into the comparison; no condition-free acidity ranking.
- OpenStax · Carboxylic-acid structure and properties (opens new tab)
General carboxylate resonance, acidity and structural interpretation; not authority for this acid’s quantitative constants.
- PubChem / HSDB · attributed physical references (opens new tab)
Conditions, isomer assignments, decomposition qualifiers and unresolved conflicts reviewed; no aggregate number treated as universal.
- IUPAC · Dissociation-constants project (opens new tab)
Aqueous compilation reviewed internally; approximate values, conditions and concentration-constant distinctions retained. Raw dataset is not redistributed in the public website.
Review limits
pKa: CONDITION-DEPENDENT. IUPAC aqueous compilation contains different approximate stepwise constants at 20/25 °C and different concentrations/ionic strengths, including explicitly concentration-based constants in NaClO₄. These cannot be collapsed into a universal pair. Main numeric field omitted. Water solubility: CONFLICT UNRESOLVED. TCI/HSDB lists 639 g/L at 20 °C; another compiled entry lists 1600 g/L at 28 °C. Temperature, solvent-versus-solution basis and method are not sufficiently matched to resolve the magnitude difference. Numeric main field omitted. Boiling behavior: CONDITION-DEPENDENT. 200 °C at 20 mmHg and 302–304 °C at 1013 hPa are different-pressure references; the latter explicitly has slow decomposition. Neither is a safe distillation procedure. Solution concentration: VERIFIED. Separate TCI G0245 specifies 50–55% w/w by neutralization titration; it is not included as a neat 99% assay product.
This informational prototype is not a supplier, quotation service, or endorsement of a product’s fitness for an application. Buyers should verify the applicable specification, certification, and regulatory requirements for their intended use.