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Carboxylic acids and anhydrides

Diglycolic acid

Also known as 2,2'-Oxydiacetic acid, Oxydiacetic acid, Acetic acid, 2,2'-oxybis-

CAS 110-99-6Formula C4H6O5Molar mass 134.09 g/molEC 203-823-5
GHS signal word: Warning. Pictograms: Harmful or irritant 10 suppliers listed
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Diglycolic acid chemical structure, C4H6O5, CAS 110-99-6
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
110-99-6
Formula
C4H6O5
Physical form
Solid
Melting point
148 °C
HS code
291899
Category
Carboxylic acids and anhydrides
Illustrative photo, 25 kg white woven sacks of powder on a pallet in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Diglycolic acid?

Plain description, key identifiers and synonyms

Diglycolic acid is a dicarboxylic acid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-(carboxymethoxy)acetic acid
CAS number
110-99-6 CAS number cross-checked
EC number
203-823-5
Molecular formula
C4H6O5
UNII
S4651635E0
MDL number
MFCD00004309
InChIKey
QEVGZEDELICMKH-UHFFFAOYSA-N
InChI
InChI=1S/C4H6O5/c5-3(6)1-9-2-4(7)8/h1-2H2,(H,5,6)(H,7,8)
SMILES (canonical and isomeric)
C(C(=O)O)OCC(=O)O

Synonyms

  • 2,2'-Oxydiacetic acid
  • Oxydiacetic acid
  • Acetic acid, 2,2'-oxybis-
  • Oxybisacetic acid
  • Oxydiethanolic acid
  • 3-Oxapentanedioic acid
  • Oxodiacetic acid
  • Bis(carboxymethyl) ether
  • Acetic acid, oxydi-
  • Bis(carboxymethyl)ether
  • 2-(carboxymethoxy)acetic acid
  • Diglycolic acid, 98%
  • diglycolicacid
  • 3-oxapentane-1,5-dioic acid
  • Oxydi(acetic acid)
  • 2,2'-Oxybisacetic acid
  • Anhydroglycolic acid
  • Acetic acid,2'-oxybis-
  • OEG
  • Diglycolic acid, pract
  • alpha,alpha-Oxydiacetic acid

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Solidexp.
Melting point
148 °Cexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
134.09 g/molcalc.
Exact mass
134.0215 Dacalc.
LogP (octanol/water)
-0.83calc.
Topological polar surface area
83.83 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
4calc.
Heavy atoms
9calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.5calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H302Harmful if swallowed.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (19)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Diglycolic acid suppliers

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All 10 suppliers
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Where suppliers are based

10 suppliers in 6 countries

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Diglycolic acid price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Diglycolic acid is traded under.

HS 2918.99Indicative HS code

Carboxylic acids, with additional oxygen function (not alcohol, phenol, aldehyde or ketone)…

World exports in 2024
$1.46B
−1.1% vs 2023, imports $1.54B
2019 to 2024
Top exporters
  1. China40.0%
  2. India * partner reported26.6%
  3. Germany8.0%
Top importers
  1. United States25.6%
  2. Brazil6.7%
  3. Argentina5.9%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Diglycolic acid is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Diglycolic acid, based on the data on this page

What is Diglycolic acid?

Diglycolic acid is a dicarboxylic acid.

What is the CAS number of Diglycolic acid?

The CAS registry number of Diglycolic acid is 110-99-6.

What is the molecular formula and weight of Diglycolic acid?

The molecular formula of Diglycolic acid is C4H6O5 and its molar mass is 134.09 g/mol.

What is Diglycolic acid used for?

Known uses and roles of Diglycolic acid include building blocks in research and laboratory.

Is Diglycolic acid hazardous?

Diglycolic acid carries the GHS signal word "Warning". Main hazards: harmful if swallowed, causes skin irritation, causes serious eye irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Diglycolic acid?

Diglycolic acid is usually classified under HS code 291899 (Carboxylic acids with additional oxygen function and their anhydrides, halides…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Diglycolic acid?

CompoundList lists 10 suppliers of Diglycolic acid in China, India, Canada, Switzerland and 2 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Diglycolic acid in India?

2 suppliers in India list Diglycolic acid on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Diglycolic acid?

Suppliers quote Diglycolic acid on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Diglycolic acid

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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