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Impurities and reference standards

Mandelic acid

Also known as dl-Mandelic acid, 2-hydroxy-2-phenylacetic acid, Phenylglycolic acid

CAS 90-64-2Formula C8H8O3Molar mass 152.15 g/molEC 202-007-6
GHS signal word: Danger. Pictograms: Corrosive, Harmful or irritant 100 suppliers listed
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Mandelic acid chemical structure, C8H8O3, CAS 90-64-2
2D chemical structure

Key facts

What buyers check first

All properties
Physical form
Liquid
Melting point
119 °C
Boiling point
320 °C
Density
1.3 @25 °C
HS code
291819
Category
Impurities and reference standards
Illustrative photo, 25 litre white jerry cans of liquid in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Mandelic acid?

Plain description, key identifiers and synonyms

Mandelic acid is a 2-hydroxy monocarboxylic acid that is acetic acid in which two of the methyl hydrogens are substituted by phenyl and hydroxyl groups. It has a role as an antibacterial agent and a human xenobiotic metabolite. It is a member of benzenes and a 2-hydroxy monocarboxylic acid. It is functionally related to an acetic acid. It is a conjugate acid of a mandelate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-hydroxy-2-phenylacetic acid
CAS number
90-64-2 CAS number cross-checkedOther or deprecated CAS: 32518-00-6, 611-72-3, 81432-25-9
EC numbers
202-007-6, 210-277-1
Molecular formula
C8H8O3
UNII
NH496X0UJX
MDL number
MFCD00064250
INCI name
MANDELIC ACID
InChIKey
IWYDHOAUDWTVEP-UHFFFAOYSA-N
InChI
InChI=1S/C8H8O3/c9-7(8(10)11)6-4-2-1-3-5-6/h1-5,7,9H,(H,10,11)
SMILES (canonical and isomeric)
C1=CC=C(C=C1)C(C(=O)O)O

Synonyms

  • dl-Mandelic acid
  • 2-hydroxy-2-phenylacetic acid
  • Phenylglycolic acid
  • Paramandelic acid
  • Uromaline
  • Racemic mandelic acid
  • Phenylhydroxyacetic acid
  • (RS)-Mandelic acid
  • Acido mandelico
  • Kyselina mandlova
  • Benzeneacetic acid, alpha-hydroxy-
  • alpha-Hydroxybenzeneacetic acid
  • alpha-Hydroxyphenylacetic acid
  • Almond acid
  • 2-Phenylglycolic acid
  • p-Mandelic acid
  • Hydroxy(phenyl)acetic acid
  • (+/-)-alpha-Hydroxyphenylacetic acid
  • Glycolic acid, phenyl-
  • 2-Phenyl-2-hydroxyacetic acid
  • alpha-Hydroxy-alpha-toluic acid
  • 2-hydroxy-2-phenyl-acetic acid
  • DL-Hydroxy(phenyl)acetic acid
  • (+/-)-mandelic acid
  • Pregabalin EP Impurity C
Show all 34 synonyms
  • DL-Amygdalic Acid
  • Kyselina 2-fenyl-2-hydroxyethanova
  • (+-)-alpha-Hydroxybenzeneacetic acid
  • alpha-Toluic acid, alpha-hydroxy-
  • (+)-Mandelate, XXI
  • (+-)-Mandelic acid
  • Benzeneacetic acid, alpha-hydroxy-, (.+/-.)-
  • mandelic-acid
  • 2-Hydroy-2-phenylacetic 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
Liquidexp.
Melting point
119 °Cexp.
Boiling point
320 °Cexp.
Density
1.3 @25 °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
152.15 g/molcalc.
Exact mass
152.0473 Dacalc.
LogP (octanol/water)
0.8calc.
Topological polar surface area
57.53 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
2calc.
Heavy atoms
11calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.13calc.
Formal charge
0calc.
Stereocentres
1calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, c1ccccc1

c1ccccc1

1 ring, 6 atoms, the Benzene ring system.

485,677 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS05: Corrosive
Corrosive
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H302Harmful if swallowed.
  • H315Causes skin irritation.
  • H318Causes serious eye damage.
  • 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 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P317Get medical help.
  • 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.
  • 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

Mandelic acid suppliers

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All 100 suppliers
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Where suppliers are based

100 suppliers in 22 countries

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Mandelic 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

Industrial uses: Intermediate.

Use classes: Cosmetics.

Cosmetic ingredient, INCI name MANDELIC ACID(antimicrobial)

Roles

  • animal metabolite
  • antibacterial agent
  • antimicrobial agent
  • eukaryotic metabolite
  • human metabolite
  • human xenobiotic metabolite
  • mammalian metabolite
  • metabolite
  • xenobiotic metabolite

Functional uses

  • Biocide

Cosmetic functions

  • Antimicrobial

Pharmacology

Mandelic Acid is an aromatic alpha hydroxy acid used in the treatment of urinary tract infections and as an oral antibiotic.

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory

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 Mandelic acid is traded under.

HS 2918.19Indicative HS code

Carboxylic acids with alcohol function but without other oxygen function, their…

World exports in 2024
$1.37B
+0.5% vs 2023, imports $1.18B
2019 to 2024
Top exporters
  1. China23.7%
  2. Italy14.7%
  3. India * partner reported12.0%
Top importers
  1. Germany11.7%
  2. South Korea9.8%
  3. Italy9.6%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Mandelic acid?

Mandelic acid is a 2-hydroxy monocarboxylic acid that is acetic acid in which two of the methyl hydrogens are substituted by phenyl and hydroxyl groups. It has a role as an antibacterial agent and a human xenobiotic metabolite. It is a member of benzenes and a 2-hydroxy monocarboxylic acid.

What is the CAS number of Mandelic acid?

The CAS registry number of Mandelic acid is 90-64-2. Other or deprecated CAS numbers: 32518-00-6, 611-72-3, 81432-25-9.

What is the molecular formula and weight of Mandelic acid?

The molecular formula of Mandelic acid is C8H8O3 and its molar mass is 152.15 g/mol.

What is Mandelic acid used for?

Industrial uses: Intermediate. Use classes: Cosmetics.

Is Mandelic acid hazardous?

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

What is the HS code of Mandelic acid?

Mandelic acid is usually classified under HS code 291819 (Carboxylic acids with alcohol function but without other oxygen function, their…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Mandelic acid?

CompoundList lists 100 suppliers of Mandelic acid in China, United States, United Kingdom, India and 18 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Mandelic acid in India?

5 suppliers in India list Mandelic 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 Mandelic acid?

Suppliers quote Mandelic 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 Mandelic 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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