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Citric acid monohydrate Structure

Citric acid monohydrate

Chemical Properties

Melting point -94 °C(lit.)
Boiling point 56 °C760 mm Hg(lit.)
Density  0.791 g/mL at 25 °C(lit.)
vapor density  2 (vs air)
vapor pressure  184 mm Hg ( 20 °C)
refractive index  n20/D 1.359(lit.)
Flash point 1 °F
storage temp.  no restrictions.
solubility  Citric Acid Monohydrate is very soluble in water, freely soluble in ethanol and sparingly soluble in ether.
pka 3.138, 4.76, 6.401
form  Solid
Specific Gravity 0.810 (20/4℃)
color  White
PH 1.85 (50g/l, H2O, 25℃)
Odor Typical, practically odorless
Water Solubility  1630 g/L (20 oC) ;H2O: soluble 54% (w/w) at 10°C (Citric acid in water)
Sensitive  Hygroscopic
Merck  14,2326
BRN  4018641
Stability Stable. Incompatible with oxidizing agents, bases, reducing agents, nitrates.
InChIKey YASYEJJMZJALEJ-UHFFFAOYSA-N
CAS DataBase Reference 5949-29-1(CAS DataBase Reference)
FDA UNII 2968PHW8QP
NIST Chemistry Reference Citric acid monohydrate(5949-29-1)
EPA Substance Registry System 1,2,3-Propanetricarboxylic acid, 2-hydroxy-, hydrate (1:1) (5949-29-1)

Safety

Symbol(GHS)
Signal wordWarning
Hazard statements H319-H335
Precautionary statements P261-P264-P271-P280-P304+P340+P312-P305+P351+P338
Hazard Codes  F,Xi
Risk Statements  11-36-66-67-41-36/37/38-37/38
Safety Statements  9-16-26-37/39-36/37/39-36
RIDADR  UN 1090 3/PG 2
WGK Germany  1
RTECS  AL3150000
TSCA  Yes
HS Code  29181400
Toxicity LD50 orally in Rabbit: 3000 mg/kg
NFPA 704:
1
2 0

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