CAS No.77-92-9,Citric acid Suppliers

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Basic Information

Molecular Structure:
CAS No.:	77-92-9
Name:	Citric acid
Article Data:	147
Cas Database

Formula:	C₆H₈O₇
Molecular Weight:	193.117
Synonyms:	Citretten;.beta.-Hydroxytricarballylic acid;K-Lyte;Citric Acid anhy;2-Hydroxy-1,2, 3-propanetricarboxylic acid;K-Lyte/Cl;Kyselina 2-hydroxy-1,2,3-propantrikarbonova [Czech];2-Hydroxypropanetricarboxylic acid;Chemfill;Citric acid (8CI);2-Hydroxy-1,2,3-propanetricarboxylic acid;3-Carboxy-3-hydroxypentane-1,5-dioic acid;Anhydrous citric acid;1,2,3-Propanetricarboxylic acid,2-hydroxy-;2-hydroxypropane-1,2,3-tricarboxylate;Anhydrous citric acid (JP14);Kyselina citronova [Czech];H3cit;FEMA No. 2306;E 330;2-Hydroxytricarballylic acid;F 0001 (polycarboxylic acid);Kyselina citronova;Hydrocerol A;Citric acid [USAN:JAN];Citric acid, anhydrous;1,2,3-Propanetricarboxylic acid, 2-hydroxy- (9CI);Uro-trainer;1,2,3-Propanetricarboxylic acid, 2-hydroxy-;Aciletten;Monohydrate Citric Acid;Citric acid anhydrate;Citric Acid Anydrous;
EINECS:	201-069-1
Density:	1.762 g/cm³
Melting Point:	153-159 °C(lit.)
Boiling Point:	309.567 °C at 760 mmHg
Flash Point:	155.243 °C
Solubility:	750 g/L (20 °C) in water
Appearance:	White crystalline powder
Hazard Symbols:	Xi,C
Risk Codes:	41-36/37/38-36/38-37/38-34
Safety:	26-39-37/39-24/25-36/37/39-45-36
Transport Information:	UN 1789 8/PG 3
PSA:	132.13000
LogP:	-1.24850

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Synthetic route

: 533-76-6
3,4-dioxo-adipic acid

: 77-92-9
citric acid

Conditions

Conditions	Yield
Stage #1: 3,4-dioxo-adipic acid With N-benzyl-trimethylammonium hydroxide In water at 45℃; for 6h; Stage #2: With hydrogenchloride In water pH=2.9;	85%

: 36838-71-8
4-methylene-tetrahydro-pyran

A: 144-62-7
oxalic acid

B: 77-92-9
citric acid

Conditions

Conditions	Yield
With nitric acid; dinitrogen tetraoxide	A 12% B 70%

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4-methylene-tetrahydro-pyran

: 77-92-9
citric acid

Conditions

Conditions	Yield
With nitric acid; dinitrogen tetraoxide 1) 0 deg C, 2 h, 2) 55 deg C, 2 h;	55%

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4-(Hydroxymethyl)tetrahydro-4-pyranol

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Conditions

Conditions	Yield
With nitric acid at 60℃; for 24h;	50%

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3-(Hydroxymethyl)-1,3,5-pentanetriol

: 77-92-9
citric acid

Conditions

Conditions	Yield
With nitric acid	12%

: 64-17-5
ethanol

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citric acid

Conditions

Conditions	Yield
With citromyces

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glyceric acid

: 77-92-9
citric acid

Conditions

Conditions	Yield
durch Aspergillus fumaricus;
durch entarteten Aspergillus fumaricus;

: 69-65-8
mannitol

A: 144-62-7
oxalic acid

B: 77-92-9
citric acid

Conditions

Conditions	Yield
durch Einw. Aspergillus niger, bei Gegenwart von Calciumcarbonat;
durch Einw. von Aspergillus cinnamomeus in Gegenwart von Calciumcarbonat;
durch Einw. von Aspergillus fumaricus in Gegenwart von Calciumcarbonat;

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mannitol

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citric acid

Conditions

Conditions	Yield
With citromyces
durch Einw.von Aspergillus niger;
durch Einw.von Aspergillus niger japonicus und Aspergillus niger cinnamomeus;
durch entarteten Aspergillus fumaricus;
durch Einw. von Aspergillus japonicus;

: 69-65-8
mannitol

A: 57-48-7
D-Fructose

B: 77-92-9
citric acid

Conditions

Conditions	Yield
beim Vergaeren durch Penicillium crustaceum und P.luteum-purpurogenum;

Raw Materials

107-92-6

533-76-6

133-99-3

142-73-4

Downstream Products

298-12-4

97-65-4

59936-29-7

116-16-5

6299-73-6

542-05-2

105-45-3

Total:1041 Page 1 of 28 1 2 3 4 5 6 …28 Next>>

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Specification

The Citric acid, also known as 1,2,3-Propanetricarboxylic acid, 2-hydroxy-, is the organic compound with the formula C₆H₈O₇. Citric acid is a weak organic acid which is a white crystalline powder. Its EINECS registry number is 201-069-1. With the CAS registry number 77-92-9, its IUPAC name is 2-hydroxypropane-1,2,3-tricarboxylic acid.It is stable but incompatible with bases, strong oxidizing agents, reducing agents, metal nitrates. Reactions with metal nitrates are potentially explosive. Heating to the point of decomposition causes emission of acrid smoke and fumes. Citric acid can exist either in an anhydrous (water-free) form or as a monohydrate. Citric acid is soluble in water.

Physical properties of Citric acid:
(1)ACD/BCF (pH 5.5): 1; (2)ACD/BCF (pH 7.4): 1; (3)ACD/KOC (pH 5.5): 1; (4)ACD/KOC (pH 7.4): 1; (5)#H bond acceptors: 7; (6)#H bond donors: 4; (7)#Freely Rotating Bonds: 6; (8)Index of Refraction: 1.575; (9)Molar Refractivity: 36.04 cm³; (10)Molar Volume: 109.007 cm³; (11)Surface Tension: 103.956 dyne/cm; (12)Density: 1.762 g/cm³; (13)Flash Point: 155.243 °C; (14)Enthalpy of Vaporization: 63.816 kJ/mol; (15)Boiling Point: 309.567 °C at 760 mmHg; (16)Vapour Pressure: 0 mmHg at 25 °C.

Preparation of Citric acid:
Except for small amounts produced from citrus-fruit wastes, Citric acid is manufactured by aerobic fermentation of crude sugar or com sugar by a special strain of Aspergillus niger. The submerged process for the manufacture of it involves coordinated sequences of biochemical conversions with the aid of A. niger and various unit operations and chemical conversions.
C₁₂H₂₂O₁₁ + H₂O + 3O₂ → 2C₆H₈O₇ + 4H₂O
sucrose citric acid
2C₆H₁₂O₆ + 3O₂ → C₆H₈O₇ + 4H₂O
dextrose citric acid

Uses of Citric acid:
Citric acid is a natural preservative/conservative and is also used to add an acidic, or sour, taste to foods and soft drinks. It is used mainly as an acidifier, as a flavoring, and as a chelating agent. Citric acid can also be used in food coloring to balance the pH level of a normally basic dye. As a food additive, Citric acid is used as a flavoring and preservative in food and beverages, especially soft drinks. Citric acid may be used as the main ripening agent in the first steps of making mozzarella cheese. Citric acid is used as a successful alternative to nitric acid in passivation of stainless steel. Citric acid can be used as a lower-odor stop bath as part of the process for developing photographic film.Citric acid is also used to remove fatty acids in blood vessels and to lower blood pressure. Meanwhile, it can also be used for cleaning, for example, Citric acid's ability to chelate metals makes it useful in soaps and laundry detergents and Citric acid can be used in shampoo to wash out wax and coloring from the hair. In addition, Citric acid can be used in cosmetics and pharmaceuticals, which is commonly used as a buffer to increase the solubility of brown heroin and as one of the active ingredients in the production of antiviral tissues.

Safety information of Citric acid:
When you are using this chemical, please be cautious about it as the following:This chemical may cause inflammation to the skin or other mucous membranes. It is irritating to eyes, respiratory system and skin. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. Whenever you will contact it, please wear suitable protective clothing, gloves and eye/face protection.

You can still convert the following datas into molecular structure:
(1)InChI: 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)
(2)InChIKey: KRKNYBCHXYNGOX-UHFFFAOYSA-N
(3)Canonical SMILES: C(C(=O)O)C(CC(=O)O)(C(=O)O)O

The toxicity data of Citric acid is as follows:

Organism	Test Type	Route	Reported Dose (Normalized Dose)	Effect	Source
mouse	LD50	intraperitoneal	903mg/kg (903mg/kg)		Toxicology. Vol. 62, Pg. 203, 1990.
mouse	LD50	intravenous	42mg/kg (42mg/kg)	BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD LUNGS, THORAX, OR RESPIRATION: CYANOSIS GASTROINTESTINAL: CHANGES IN STRUCTURE OR FUNCTION OF SALIVARY GLANDS	Journal of Pharmacology and Experimental Therapeutics. Vol. 94, Pg. 65, 1948.
mouse	LD50	oral	5040mg/kg (5040mg/kg)	LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES MUSCULOSKELETAL: OTHER CHANGES	Takeda Kenkyusho Ho. Journal of the Takeda Research Laboratories. Vol. 30, Pg. 25, 1971.
mouse	LD50	subcutaneous	2700mg/kg (2700mg/kg)	LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES MUSCULOSKELETAL: OTHER CHANGES	Takeda Kenkyusho Ho. Journal of the Takeda Research Laboratories. Vol. 30, Pg. 25, 1971.
rabbit	LD50	intravenous	330mg/kg (330mg/kg)	BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD GASTROINTESTINAL: CHANGES IN STRUCTURE OR FUNCTION OF SALIVARY GLANDS LUNGS, THORAX, OR RESPIRATION: CYANOSIS	Journal of Pharmacology and Experimental Therapeutics. Vol. 94, Pg. 65, 1948.
rabbit	LDLo	oral	7gm/kg (7000mg/kg)	BEHAVIORAL: TREMOR BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD BEHAVIORAL: MUSCLE CONTRACTION OR SPASTICITY)	Industrial and Engineering Chemistry. Vol. 15, Pg. 628, 1923.
rat	LD50	intraperitoneal	290mg/kg (290mg/kg)		Toksikologicheskii Vestnik. Vol. (5), Pg. 9, 1994.
rat	LD50	oral	3gm/kg (3000mg/kg)		Oyo Yakuri. Pharmacometrics. Vol. 43, Pg. 561, 1992.
rat	LD50	subcutaneous	5500mg/kg (5500mg/kg)	LUNGS, THORAX, OR RESPIRATION: OTHER CHANGES MUSCULOSKELETAL: OTHER CHANGES	Takeda Kenkyusho Ho. Journal of the Takeda Research Laboratories. Vol. 30, Pg. 25, 1971.