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Merck
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文件

C0759

Sigma-Aldrich

无水柠檬酸粉末

99%

同義詞:

2-Hydroxy-1,2,3-propanetricarboxylic acid, 2-Hydroxypropan-1,2,3-tricarboxylic acid

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About This Item

線性公式:
HOC(COOH)(CH2COOH)2
CAS號碼:
77-92-9
分子量：:
192.12
Beilstein:
782061
EC號碼:
201-069-1
MDL號碼:
MFCD00011669
分類程式碼代碼:
12352100
eCl@ss:
39021801
PubChem物質ID:
329774820
NACRES:
NA.21

品質等級

200

化驗

99%

形狀

crystals

expl. lim.

8 %, 65 °F

pKa (25 °C)

(1) 3.13, (2) 4.76, (3) 6.40

pKa 

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

mp

153-159 °C (lit.)

溶解度

water: soluble 383 g/L at 25 °C

SMILES 字串

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

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)

InChI 密鑰

KRKNYBCHXYNGOX-UHFFFAOYSA-N

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相關類別

一般說明

柠檬酸是一种天然成分，广泛应用于许多工业应用，如螯合、缓冲、pH调节和衍生化。它还可作为缩合、酸催化、环加成、脱保护和脱羧反应的试剂。

應用

柠檬酸可用作反应物来合成：
  • 通过硫酸催化柠檬酸与与脂肪醇C2-C5的酯化反应合成柠檬酸三乙酯。
  • 通过无催化剂缩聚反应合成生物可降解热固性聚合物。
也可用作催化剂，通过与2-萘酚、醛、酰胺/尿素反应合成氨基烷基萘酚。

象形圖

Exclamation mark
GHS07

訊號詞

Warning

危險聲明

H319,H335

危險分類

Eye Irrit. 2 - STOT SE 3

標靶器官

Respiratory system

儲存類別代碼

11 - Combustible Solids

水污染物質分類（WGK）

WGK 1

閃點（°F）

Not applicable

閃點（°C）

Not applicable

個人防護裝備

dust mask type N95 (US), Eyeshields, Gloves

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分析證明 (COA)

Lot/Batch Number
0000398835
0000397084
0000388122
0000388990
0000380083

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A method for decalcification with citric acid.
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Biotechnic & Histochemistry, 68(1), 42-45 (1993)
Determination of citric acid in fats.
Ohlson R, et al.
Journal of the American Oil Chemists' Society, 45(6), 475-476 (1968)
Wheat straw hemicellulose films as affected by citric acid.
Azeredo HMC, et al.
Food Hydrocolloids, 50 (2015)
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