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Impurities and reference standards

Tributyl citrate

Also known as Butyl citrate, tributyl 2-hydroxypropane-1,2,3-tricarboxylate, Tri-n-butyl citrate

CAS 77-94-1Formula C18H32O7Molar mass 360.45 g/molEC 201-071-2
GHS signal word: Danger. Pictograms: Corrosive 46 suppliers listed
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Tributyl citrate chemical structure, C18H32O7, CAS 77-94-1
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
77-94-1
Formula
C18H32O7
Physical form
Liquid
Density
1.05 @25 °C
HS code
291815
Category
Impurities and reference standards
Illustrative photo, 200 litre blue HDPE drums of liquid in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Tributyl citrate?

Plain description, key identifiers and synonyms

Tributyl citrate is a carbonyl compound.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
tributyl 2-hydroxypropane-1,2,3-tricarboxylate
CAS number
77-94-1 CAS number cross-checked
EC number
201-071-2
Molecular formula
C18H32O7
UNII
827D5B1B6S
MDL number
MFCD00027217
INCI name
TRIBUTYL CITRATE
InChIKey
ZFOZVQLOBQUTQQ-UHFFFAOYSA-N
InChI
InChI=1S/C18H32O7/c1-4-7-10-23-15(19)13-18(22,17(21)25-12-9-6-3)14-16(20)24-11-8-5-2/h22H,4-14H2,1-3H3
SMILES (canonical and isomeric)
CCCCOC(=O)CC(CC(=O)OCCCC)(C(=O)OCCCC)O

Synonyms

  • Butyl citrate
  • tributyl 2-hydroxypropane-1,2,3-tricarboxylate
  • Tri-n-butyl citrate
  • Citroflex 4
  • Citric acid, tributyl ester
  • 1,2,3-Propanetricarboxylic acid, 2-hydroxy-, tributyl ester
  • Citric Acid Tributyl Ester
  • Morflex tbc
  • Citroflex c 4
  • 2-Hydroxy-1,2,3-propanetricarboxylic acid, tributyl ester
  • 1,2,3-Propanetricarboxylic acid, 2-hydroxy-, 1,2,3-tributyl ester
  • tributyl citric acid
  • n-Butyl citrate
  • Butyl citrate (VAN)
  • Tributyl 2-hydroxy-1,2,3-propanetricarboxylate
  • Tributyl Acetylcitrate Imp. A (EP), Tributyl 2-Hydroxypropane-1,2,3-tricarboxylate, Tributyl Citrate, Tributyl Acetylcitrate Impurity A
  • Tributyl2-hydroxypropane-1,2,3-tricarboxylate
  • Citric acid tri-n-butyl ester
  • Tri-n-butyl citrate, >99%
  • Tributyl citrate, >=97.0%
  • Tributyl citrate Solution in Hexane
  • Tributyl Acetylcitrate EP Impurity A
  • Tributyl citrate Solution in Hexane, 100ug/mL
  • Tributyl citrate Solution in Hexane, 1000?g/mL
  • Tributyl citrate Solution in Hexane, 1000ug/mL
Show all 31 synonyms
  • Tributyl 2-hydroxy-1,2,3-propanetricarboxylate #
  • Tributyl acetylcitrate impurity a
  • 2-Hydroxy-1,3-propanetricarboxylic acid, tributyl ester
  • 1,3-Propanetricarboxylic acid, 2-hydroxy-, tributyl ester
  • Tributyl citrate, United States Pharmacopeia (USP) Reference Standard
  • Tributyl citrate, Pharmaceutical Secondary Standard, Certified Reference Material

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.
Density
1.05 @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
360.45 g/molcalc.
Exact mass
360.2148 Dacalc.
LogP (octanol/water)
2.53calc.
Topological polar surface area
99.13 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
7calc.
Rotatable bonds
14calc.
Heavy atoms
25calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.83calc.
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
Danger
GHS05: Corrosive
Corrosive

Hazard statements

  • H318Causes serious eye damage.
Precautionary statements (4)
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • 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.

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

Tributyl citrate suppliers

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All 46 suppliers
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Where suppliers are based

46 suppliers in 14 countries

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Tributyl citrate 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

Plastics -> Typical concentration range in plastic materials -> 10.0 - 35.0%.

Industrial uses: Plasticizer, Intermediate, Coalescing agent.

Consumer uses: Plasticizer, Coalescing agent.

Use classes: Plastics, Cosmetics.

Cosmetic ingredient, INCI name TRIBUTYL CITRATE(film forming, plasticiser, solvent)

Functional uses

  • Film former
  • Plasticizer
  • Processing aids not otherwise specified
  • Solvent

Cosmetic functions

  • Film forming
  • Plasticiser
  • Solvent

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 Tributyl citrate is traded under.

HS 2918.15Indicative HS code

Salts and esters of citric acid

World exports in 2024
$711M
−5.1% vs 2023, imports $863M
2019 to 2024
Top exporters
  1. China39.3%
  2. Germany25.1%
  3. United States7.9%
Top importers
  1. United States16.3%
  2. Germany5.9%
  3. Poland5.8%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about Tributyl citrate, based on the data on this page

What is Tributyl citrate?

Tributyl citrate is a carbonyl compound.

What is the CAS number of Tributyl citrate?

The CAS registry number of Tributyl citrate is 77-94-1.

What is the molecular formula and weight of Tributyl citrate?

The molecular formula of Tributyl citrate is C18H32O7 and its molar mass is 360.45 g/mol.

What is Tributyl citrate used for?

Plastics -> Typical concentration range in plastic materials -> 10.0 - 35.0%. Industrial uses: Plasticizer, Intermediate, Coalescing agent. Consumer uses: Plasticizer, Coalescing agent. Use classes: Plastics, Cosmetics.

Is Tributyl citrate hazardous?

Tributyl citrate carries the GHS signal word "Danger". Main hazards: causes serious eye damage. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Tributyl citrate?

Tributyl citrate is usually classified under HS code 291815 (Salts and esters of citric acid). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Tributyl citrate?

CompoundList lists 46 suppliers of Tributyl citrate in China, United States, India, Germany and 10 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Tributyl citrate in India?

5 suppliers in India list Tributyl citrate on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Tributyl citrate?

Suppliers quote Tributyl citrate 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 Tributyl citrate

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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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