Common Name	Citric acid monohydrate
CAS Number	5949-29-1
Molecular Weight	210.139
Density	1.54
Boiling Point	56 °C760 mm Hg(lit.)
Molecular Formula	C6H10O8
Melting Point	135-152 ºC
MSDS	Chinese USA
Flash Point	173.9 ºC
Symbol	GHS07
Signal Word	Warning

Density	1.54
Boiling Point	56 °C760 mm Hg(lit.)
Melting Point	135-152 ºC
Molecular Formula	C6H10O8
Molecular Weight	210.139
Flash Point	173.9 ºC
Exact Mass	210.037567
PSA	141.36000
Vapour density	2 (vs air)
Vapour Pressure	184 mm Hg ( 20 °C)
Index of Refraction	n20/D 1.359(lit.)
Storage condition	Store at RT.
Stability	Stable. Incompatible with oxidizing agents, bases, reducing agents, nitrates.
Water Solubility	1630 g/L (20 ºC)

CHEMICAL IDENTIFICATION
RTECS NUMBER :
GE7810000
CHEMICAL NAME :
Citric acid, monohydrate
CAS REGISTRY NUMBER :
5949-29-1
LAST UPDATED :
199504
DATA ITEMS CITED :
3
MOLECULAR FORMULA :
C6-H8-O7.H2-O
MOLECULAR WEIGHT :
210.16
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
TYPE OF TEST :
Rinsed with water
ROUTE OF EXPOSURE :
Administration into the eye
SPECIES OBSERVED :
Rodent - rabbit
REFERENCE :
TXCYAC Toxicology. (Elsevier Scientific Pub. Ireland, Ltd., POB 85, Limerick, Ireland) V.1- 1973- Volume(issue)/page/year: 23,281,1982 ** ACUTE TOXICITY DATA **
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
375 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
NTIS** National Technical Information Service. (Springfield, VA 22161) Formerly U.S. Clearinghouse for Scientific & Technical Information. Volume(issue)/page/year: AD-A121-876 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - X3648 No. of Facilities: 715 (estimated) No. of Industries: 11 No. of Occupations: 15 No. of Employees: 17300 (estimated) No. of Female Employees: 9926 (estimated)

Symbol	GHS07
Signal Word	Warning
Hazard Statements	H319
Precautionary Statements	P305 + P351 + P338
Personal Protective Equipment	dust mask type N95 (US);Eyeshields;Gloves
Hazard Codes	Xi:Irritant
Risk Phrases	R36/37/38;R41
Safety Phrases	S9-S16-S26-S37/39-S36/37/39
RIDADR	UN 1090 3/PG 2
WGK Germany	1
RTECS	AL3150000
Packaging Group	I; II; III
HS Code	2918140000

N/A

1.What is Citric Acid Monohydrate?

Health Hazards: Irritant. In industrial use, contact may cause eczema. Flammability Hazard: This product is flammable and irritating. Colorless crystal or white crystalline powder. Hazardous Characteristics: Powder and air can form explosive mixtures. In case of open flame, high heat or contact with oxidizing agent, there is a danger of causing combustion and explosion Citric acid monohydrate and sodium citrate dihydrate with citrate buffer of pH 6.0. It is mainly used in food and beverage industry as acidifier, flavoring agent, preservative and freshness-keeping agent. It is also used as antioxidant, plasticizer and detergent in chemical industry, cosmetic industry and washing industry.

2.How is Citric Acid Monohydrate produced?

There are 2 methods for citric acid monohydrate production process: Fruit juice extraction method. The juice is pressed from the fruit containing citric acid, and then the juice is mixed with milk of lime to produce calcium citrate, and then treated with sulfuric acid to get a purer citric acid solution before concentration and crystallization to get the product. Chemical synthesis method. Acetone as raw material for the synthesis of citric acid, acetone by dimming, and hydrocyanic acid reaction, and then hydrolysis can be obtained citric acid in the choice of raw materials, to use high-quality non-polluting raw materials; Pay attention to prevent product pollution and deterioration in the production process;

3.How is Citric Acid Monohydrate stored and distributed?

1. Food grade should be transported and stored according to food hygiene requirements. Avoid mixing and transporting, and load and unload lightly when handling to prevent damage to the package. 2. Precautions for safe operation: In places where dust is generated, provide suitable exhaust equipment. General fire protection measures. 3. Storage conditions:Keep sealed and keep away from light Temperature conditions:Room temperature 4. Moisture-proofing:To avoid the bag from breaking, to avoid its moisture and rain, so as to ensure that its properties will not change. To avoid unnecessary losses. 5. Anti-temperature: when under the influence of high temperature, performance, properties will be more or less affected, therefore, in the storage must avoid high temperature. 6. Fire prevention: When storing, pay special attention to fire prevention.

4.What is Citric Acid Monohydrate used for?

Citric acid monohydrate is mainly used in food and beverages as a flavoring agent, acidifier and preservative. Citric acid is a very important organic acid, and in the physiological mechanism, citric acid is an important substance that converts fats, proteins and sugars into carbon dioxide, which is the core reaction in all metabolic processes. It is also used in the chemical and cosmetic industries as an antioxidant and detergent. 1. Acidifying effect: Citric acid monohydrate has strong acidity, which can be used to regulate the pH of foodstuffs and make them taste more delicious. 2. Preservation: Citric acid monohydrate can inhibit the growth and reproduction of bacteria and mold, thus prolonging the shelf life of food. 3. Flavor Enhancement: Citric Acid Monohydrate can enhance the sourness and freshness of food, making its taste richer. 4.Used as acidulant in beverages (cola, soft drinks, etc.) to regulate the taste. 5.Used as a preservative in canned foods.