Basic information
- Name:
Citric acid monohydrate
- CAS No.:
5949-29-1
- Molecular Structure:
- Formula:
- C6H10O8
- Molecular Weight:
- 210.1388
- Synonyms:
- Citric acid hydrate;UNII-2968PHW8QP;Citric Acid Mono;
- EINECS:
- 200-662-2
- Density:
- 0.791 g/mL at 25 °C(lit.)
- Melting Point:
- -94 °C(lit.)
- Boiling Point:
- 309.6 °C at 760 mmHg
- Flash Point:
- 155.2 °C
- Solubility:
- 1630 g/L (20 °C) in water
- Appearance:
- white crystals or powder
- Hazard Symbols:
F, 
Xi- Risk Codes:
- 11-36-66-67-41-36/37/38-37/38
- Safety Description:
- 9-16-26-37/39-36/37/39-36 Details
- Transport Information:
- UN 1090 3/PG 2
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Chemistry
Molecular structure of Citric acid monohydrate (CAS NO.5949-29-1) is:
Product Name: Citric acid monohydrate
CAS Registry Number: 5949-29-1
IUPAC Name: 2-hydroxypropane-1,2,3-tricarboxylic acid hydrate
Molecular Weight: 210.1388 [g/mol]
Molecular Formula: C6H10O8
H-Bond Donor: 5
H-Bond Acceptor: 8
Melting Point: -94 °C(lit.)
Storage temp.: Store at RT.
Water Solubility: 1630 g/L (20 °C)
Sensitive: Hygroscopic
Stability: Stable. Incompatible with oxidizing agents, bases, reducing agents, nitrates.
Flash Point: 155.2 °C
Enthalpy of Vaporization: 63.82 kJ/mol
Boiling Point: 309.6 °C at 760 mmHg
Vapour Pressure: 5.73E-05 mmHg at 25°C
Product Categories: C-D, Puriss p.a. ACS; Puriss p.a. ACS; Buffers A to ZCarbonyl Compounds; Other BiochemicalBiological Buffers; Biochemicals Found in Plants; C6Nutrition Research; Carboxylic Acids; SigmaUltra Buffers; ACS GradeCarbonyl Compounds; Essential Chemicals; Other Biochemical; Analytical Reagents; Analytical Reagents for General Use; Puriss; Buffers A to ZEssential Chemicals; USP/MultiCompendial Grade Buffers; USPBiological Buffers; Biological Buffers; Routine Reagents; Buffers A to ZNutrition Research; Reagent GradeMetabolic Pathways; Metabolites and Cofactors on the Metabolic Pathways Chart; Other BiochemicalEssential Chemicals; TCA
Uses
Citric acid monohydrate (CAS NO.5949-29-1) is a natural preservative and is also used to add an acidic, or sour, taste to foods and soft drinks.
Toxicity Data With Reference
| Organism | Test Type | Route | Reported Dose (Normalized Dose) | Effect | Source |
|---|---|---|---|---|---|
| rat | LD50 | intraperitoneal | 375mg/kg (375mg/kg) | National Technical Information Service. Vol. AD-A121-876, |
Safety Profile
Hazard Codes: 
F, 
Xi
Risk Statements: 11-36-66-67-41-36/37/38-37/38
11: Highly Flammable
36: Irritating to the eyes
66: Repeated exposure may cause skin dryness or cracking
67: Vapors may cause drowsiness and dizziness
41: Risk of serious damage to eyes
36/37/38: Irritating to eyes, respiratory system and skin
37/38: Irritating to respiratory system and skin
Safety Statements: 9-16-26-37/39-36/37/39-36
9: Keep container in a well-ventilated place
16: Keep away from sources of ignition - No smoking
26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice
37/39: Wear suitable gloves and eye/face protection
36/37/39: Wear suitable protective clothing, gloves and eye/face protection
36: Wear suitable protective clothing
RIDADR: UN 1090 3/PG 2
WGK Germany: 1
RTECS: AL3150000
HS Code 29181400
Specification
Citric acid monohydrate , its cas register number is 5949-29-1. It also can be called Citric acid hydrate ; Citric acid monohydrate ; UNII-2968PHW8QP ; 1,2,3-Propanetricarboxylic acid, 2-hydroxy-, monohydrate . It is a white crystals or powder.