• USA Home
  • 33114 - Citric acid monohydrate

EMAIL THIS PAGE TO A FRIEND
33114 Sigma-Aldrich

Citric acid monohydrate

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., buffer substance, 99.5-102%

  • CAS Number 5949-29-1

  • Linear Formula HOC(COOH)(CH2COOH)2 · H2O

  • Molecular Weight 210.14

  •  Beilstein Registry Number 4018641

  •  EC Number 201-069-1

  •  MDL number MFCD00149972

  •  PubChem Substance ID 24859936

Purchase

Properties

Related Categories Acids, Acids & Bases, Analytical Reagents, Analytical Reagents for General Use, Analytical/Chromatography,
grade   ACS reagent, reag. ISO, reag. Ph. Eur.
InChI Key   YASYEJJMZJALEJ-UHFFFAOYSA-N
grade   puriss. p.a.
assay   99.5-100.5% (calc. on anhydrous substance)
  99.5-102%
impurities   ≤0.005% insolubles in water
  ≤2 ppm heavy metals (as Pb)
  7.5-9.0% water (Karl Fischer)
ign. residue   ≤0.01% (as SO4)
pKa    (1) 3.13, (2) 4.76, (3) 6.4
anion traces   chloride (Cl-): ≤5 mg/kg
  oxalate (C2O42-): ≤50 ppm
  phosphate (PO43-): ≤10 mg/kg
  sulfate (SO42-): ≤20 ppm
cation traces   Ca: ≤50 mg/kg
  Cu: ≤5 mg/kg
  Fe: ≤3 ppm
  Pb: ≤2 ppm
  Zn: ≤5 mg/kg
suitability   complies for appearance of solution
  complies for reaction against H2SO4

Description

General description

Citric acid monohydrate is an organic acid. Its molar enthalpy of solution in water has been reported to be ΔsolHm (298.15K, m = 0.0203molkg-1) = (29061 ± 123)Jmol-1.

Price and Availability

Safety & Documentation

Safety Information

Symbol 
GHS07  GHS07
Signal word 
Warning
Hazard statements 
Precautionary statements 
Personal Protective Equipment 
RIDADR 
NONH for all modes of transport
WGK Germany 
1
RTECS 
GE7810000
Flash Point(F) 
343.4 °F
Flash Point(C) 
173 °C
Protocols & Articles

Related Content

Molarity Calculator and Normality Calculator for Acids and Bases

The molarity calculator tool provides lab-ready directions describing how to prepare an acid or base solution of specified Molarity (M) or Normality (N) from a concentrated acid or base solution.  To...

Peer-Reviewed Papers
15

References

Set your institution to view full text papers.
Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?