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Merck

791725

Citric acid

anhydrous grade, ACS reagent grade, ≥99.5%, Redi-Dri™, free-flowing, crystals

동의어(들):

2-Hydroxy-propane-1,2,3-tricarboxylic acid

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제품정보 (DICE 배송 시 비용 별도)

Linear Formula:
HOC(COOH)(CH2COOH)2
CAS 번호:
77-92-9
Molecular Weight:
192.12
NACRES:
NA.21
PubChem Substance ID:
329768287
UNSPSC Code:
12352100
EC Number:
201-069-1
MDL number:
MFCD00011669
Beilstein/REAXYS Number:
782061
Assay:
≥99.5%
Form:
crystals

주요 문서

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제품 이름

Citric acid, anhydrous, free-flowing, Redi-Dri™, ACS reagent, ≥99.5%

InChI key

KRKNYBCHXYNGOX-UHFFFAOYSA-N

InChI

1S/C6H8O7/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)

SMILES string

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

grade

ACS reagent, anhydrous

product line

Redi-Dri™

assay

≥99.5%

form

crystals

quality

free-flowing

expl. lim.

8 %, 65 °F

impurities

Substances carbonizable by hot sulfuric acid, passes test

ign. residue

≤0.02%

pKa 

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

mp

153-159 °C (lit.)

anion traces

chloride (Cl-): ≤0.001%, oxalate (C2O42-): passes test (limit about 0.003%), phosphate (PO43-): ≤0.001%, sulfate (SO42-): ≤0.002%

cation traces

Fe: ≤3 ppm, Pb: ≤2 ppm

functional group

carboxylic acid, hydroxyl

Quality Level

200

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관련 카테고리

General description

Citric acid also called 2-hydroxy-propane-1,2,3-tricarboxylic acid, is a component of the tricarboxylic acid cycle in all organisms. Industrial production of citric acid use fungal, yeast and citrus fruit as the major source. Aspergillus niger is majorly used for citric acid production by fermentation Manganese inhibits fermentative production of citric acid Oral supplementation of citric acid promotes tricarboxylic acid cycle and oxidative phosphorylation in mitochondria, attenuating physical fatigue.

Application

Citric acidhas been used as a component of citrate buffer and Fe-free sauton′s medium. It has been used in hybridization chain reaction buffer for preequilibration of coverslips for testes sections.

Legal Information

Redi-Dri™ is a trademark of Sigma-Aldrich Co. LLC
Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

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

Not applicable

flash_point_c

Not applicable

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시험 성적서(COA)

Lot/Batch Number
MKCL2222
MKCL0758
MKCJ6756
MKCH1340
MKCF2450

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문서 라이브러리에서 최근에 구매한 제품에 대한 문서를 찾아보세요.

문서 라이브러리 방문

Biochemical studies of citric acid production and accumulation by Aspergillus niger mutants
Gupta S and Sharma CB
World Journal of Microbiology & Biotechnology, 18(5), 379-383 (2002)
A comprehensive roadmap of murine spermatogenesis defined by single-cell RNA-seq
Green CD, et al.
Developmental Cell, 46(5), 651-667 (2018)
Methylene blue exerts a neuroprotective effect against traumatic brain injury by promoting autophagy and inhibiting microglial activation
Zhao M, et al.
Molecular Medicine Reports, 13(1), 13-20 (2016)
Biotechnological production of citric acid
Max B, et al.
Brazilian Journal of Microbiology, 41(4), 862-875 (2010)
Effects of citric acid and L-carnitine on physical fatigue
Sugino T, et al.
Journal of Clinical Biochemistry and Nutrition, 41(3), 224-230 (2007)
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문서

Redi-Dri™ – The World of Free-flowing Hygroscopic Products

Redi-Dri™ prevents hygroscopic powders, such as inorganic salts, from absorbing moisture and forming clumps, leaving the salts free-flowing every time.

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