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Esters and lactones

Docusate calcium

Also known as Dioctyl calcium sulfosuccinate, Surfak, 1,4-Bis(2-ethylhexyl) sulfosuccinate, calcium salt

CAS 128-49-4Formula C40H74CaO14S2Molar mass 883.23 g/molEC 204-889-8
GHS signal word: Warning. Pictograms: Harmful or irritant 31 suppliers listed Drug substance
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Docusate calcium chemical structure, C40H74CaO14S2, CAS 128-49-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
128-49-4
Formula
C40H74CaO14S2
Molar mass
883.23 g/mol
EC number
204-889-8
HS code
291719
Category
Esters and lactones

What is Docusate calcium?

Plain description, key identifiers and synonyms

Docusate Calcium is the calcium salt of docusate, a dioctyl salt and an emollient laxative with stool-softening activity. Docusate decreases surface tension and emulsification of fecal matter and allows water to penetrate and mix with stool. As a result, it softens the stool.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
calcium bis(1,4-bis(2-ethylhexoxy)-1,4-dioxobutane-2-sulfonate)
CAS number
128-49-4 CAS number cross-checked
EC number
204-889-8
Molecular formula
C40H74CaO14S2
UNII
6K7YS503HC
MDL number
MFCD00072112
InChIKey
DWKPZOZZBLWFJX-UHFFFAOYSA-L
InChI
InChI=1S/2C20H38O7S.Ca/c2*1-5-9-11-16(7-3)14-26-19(21)13-18(28(23,24)25)20(22)27-15-17(8-4)12-10-6-2;/h2*16-18H,5-15H2,1-4H3,(H,23,24,25);/q;;+2/p-2
SMILES (canonical and isomeric)
CCCCC(CC)COC(=O)CC(C(=O)OCC(CC)CCCC)S(=O)(=O)[O-].CCCCC(CC)COC(=O)CC(C(=O)OCC(CC)CCCC)S(=O)(=O)[O-].[Ca+2]

Synonyms

  • Dioctyl calcium sulfosuccinate
  • Surfak
  • 1,4-Bis(2-ethylhexyl) sulfosuccinate, calcium salt
  • Butanedioic acid, sulfo-, 1,4-bis(2-ethylhexyl) ester, calcium salt
  • Kao Tin
  • Stool Softener Laxative
  • Preferred Stool Softener
  • Rite Aid Stool Softener
  • Stool Softener DC Laxative
  • Good Neighbor Pharmacy Stool Softener
  • Dioctyl Sulfosuccinic Acid, Calcium Salt
  • Butanedioic acid,2-sulfo-, 1,4-bis(2-ethylhexyl) ester, calcium salt (2:1)
  • calcium, 1,4-bis(2-ethylhexoxy)-1,4-dioxobutane-2-sulfonate
  • Calcium 1,4-bis(2-ethylhexyl) bis(2-sulphosuccinate)
  • Calcium 1,4-bis((2-ethylhexyl)oxy)-1,4-dioxobutane-2-sulfonate
  • Bis(2-ethylhexyl) sulfosuccinate hemicalcium salt
  • docusatecalcium
  • Surfak (TN)
  • Docusate calcium (USP)
  • docusate calcium (500 mg)
  • calcium dioctyl sulfosuccinate
  • C40H74CaO14S2
  • calcium di-2-ethylhexylsulfosuccinate
  • bis[3-sulfosuccinic acid 1,4-bis(2-ethylhexyl)]calcium salt
  • butanedioicacid,sulfo-,1,4-bis(2-ethylhexyl)ester,calciumsalt
Show all 29 synonyms
  • calcium, 1,4-bis(2-ethylhexoxy)-1,4-dioxo-butane-2-sulfonate
  • Calcium1,4-bis((2-ethylhexyl)oxy)-1,4-dioxobutane-2-sulfonate
  • bis[1,2-bis[(2-ethylhexyl)oxycarbonyl]ethanesulfonic acid] calcium salt
  • Calcium bis{1,4-bis[(2-ethylhexyl)oxy]-1,4-dioxobutane-2-sulfonate}

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

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

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
883.23 g/molcalc.
Exact mass
882.4146 Dacalc.
LogP (octanol/water)
7.24calc.
Topological polar surface area
219.6 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
14calc.
Rotatable bonds
32calc.
Heavy atoms
57calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.9calc.
Formal charge
0calc.
Stereocentres
6calc.
Components
3calc.
Lipinski rule of five
Fails (3 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

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
Precautionary statements (9)
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • 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.

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

Docusate calcium suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 31 suppliers
30 of 30 offers

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Where suppliers are based

31 suppliers in 7 countries

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Docusate calcium 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

Industries and functions

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • Active ingredient in FDA approved drug labels

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Docusate calcium is traded under.

HS 2917.19Indicative HS code

Acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and…

World exports in 2024
$718M
+8.1% vs 2023, imports $915M
2019 to 2024
Top exporters
  1. China46.6%
  2. United States13.7%
  3. Germany10.1%
Top importers
  1. United States16.2%
  2. Denmark11.8%
  3. Germany10.0%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about Docusate calcium, based on the data on this page

What is Docusate calcium?

Docusate Calcium is the calcium salt of docusate, a dioctyl salt and an emollient laxative with stool-softening activity. Docusate decreases surface tension and emulsification of fecal matter and allows water to penetrate and mix with stool. As a result, it softens the stool.

What is the CAS number of Docusate calcium?

The CAS registry number of Docusate calcium is 128-49-4.

What is the molecular formula and weight of Docusate calcium?

The molecular formula of Docusate calcium is C40H74CaO14S2 and its molar mass is 883.23 g/mol.

What is Docusate calcium used for?

Known uses and roles of Docusate calcium include softeners in textiles and leather.

Is Docusate calcium hazardous?

Docusate calcium carries the GHS signal word "Warning". Main hazards: 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 Docusate calcium?

Docusate calcium is usually classified under HS code 291719 (Acyclic polycarboxylic acids, their anhydrides, halides, peroxides, peroxyacids and…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Docusate calcium?

CompoundList lists 31 suppliers of Docusate calcium in United States, China, Spain, Latvia and 3 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Docusate calcium?

Suppliers quote Docusate calcium 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 Docusate calcium

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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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