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Merck

C1909

Citric acid monohydrate

ACS reagent grade, ≥99.0%, powder

동의어(들):

2-hydroxy-1,2,3-propanetricarboxylic acid monohydrate

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제품정보 (DICE 배송 시 비용 별도)

Linear Formula:
HOC(COOH)(CH2COOH)2 · H2O
CAS 번호:
5949-29-1
Molecular Weight:
210.14
NACRES:
NA.21
PubChem Substance ID:
24892446
UNSPSC Code:
12352100
EC Number:
201-069-1
MDL number:
MFCD00149972
Beilstein/REAXYS Number:
4018641
Assay:
≥99.0%
Form:
powder
Grade:
ACS reagent

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제품 이름

Citric acid monohydrate, ACS reagent, ≥99.0%

InChI key

YASYEJJMZJALEJ-UHFFFAOYSA-N

InChI

1S/C6H8O7.H2O/c7-3(8)1-6(13,5(11)12)2-4(9)10;/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12);1H2

SMILES string

OC(CC(O)(C(O)=O)CC(O)=O)=O.O

grade

ACS reagent

assay

≥99.0%

form

powder

impurities

Substances carbonizable by hot sulfuric acid, passes test, ≤0.005% Insoluble matter

ign. residue

≤0.02%

Quality Level

200

pH

(1.8 at 50 g/l at 20 °C)

pKa 

(1) 3.13, (2) 4.76, (3) 6.4

solubility

H2O: soluble 54 % (w/w) at 10 °C (Citric acid in water), H2O: 59.2 % (w/w) at 20 °C (Citric acid in water), H2O: 84.0 % (w/w) at 100 °C (Citric acid in water)

anion traces

chloride (Cl-): ≤0.001%, oxalate (C2O42-): passes test (limit about 0.05%), phosphate (PO43-): ≤0.001%, sulfate (SO42-): ≤0.002%

cation traces

Fe: ≤3 ppm, Pb: ≤2 ppm

functional group

carboxylic acid

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관련 카테고리

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. It can be produced by crystallization from mother liquor of citric acid solution at 20-25°C during citric acid synthesis. An investigation of its crystal growth kinetics indicates that growth is linearly dependent on size.

Citric acid monohydrate is an organic weak acid used as a natural preservative in food and beverage products.

Application

Citric acid monohydrate was used in the preparation of citric acid solution employed in the acetone method of 68Ga pre-purification and radiolabeling technique.
It may be used:
  • As release-modifying agent to improve the release of diltiazem hydrochloride from melt extruded Eudragit RS PO tablets.
  • To prepare citrate buffer for use in the preparation of platelets for intravital microscopy.
  • To prepare Tris-citrate buffer employed for the electrophoresis of bacterial enzymes.

pictograms

Exclamation mark
GHS07

signalword

Warning

hcodes

H319,H335

Hazard Classifications

Eye Irrit. 2 - STOT SE 3

target_organs

Respiratory system

저장 등급

11 - Combustible Solids

wgk

WGK 1

flash_point_f

345.0 °F - closed cup

flash_point_c

173.9 °C - closed cup

ppe

dust mask type N95 (US), Eyeshields, Gloves

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시험 성적서(COA)

Lot/Batch Number
0000533532
0000537318
0000533533
0000533534
0000533530

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