What is the CAS number for citric acid?
77-92-9
Key Specifications Table
| CAS # | EC Number | Molar Mass |
|---|---|---|
| 77-92-9 | 201-069-1 | 192.12 g/mol |
What is citric acid monohydrate used for?
Citric Acid Monohydrate is a tricarboxylic acid found in citrus fruits. Citric acid is used as an excipient in pharmaceutical preparations due to its antioxidant properties. It maintains stability of active ingredients and is used as a preservative.
What is the molar mass of citric acid?
192.124 g/molCitric acid / Molar mass
Given that the molecular weight of citric acid is 192.12 g mol–1 (210.14 g mol–1 for the monohydrate) and that the specific volume of analogous compounds tends to be around 0.6–0.7 cm3 g–1, the standard molar volumes reported by Roy et al.
What is citric acid powder?
Citric acid is a white powder used to give a sour taste to beverages and food products. It is also used as a preservative to prevent spoilage because it increases the acidity of products and many bacteria that cause food spoilage are unable to grow in an acidic environment.
What is the CAS number for ascorbic acid?
50-81-7
L-Ascorbic Acid, Free Acid – CAS 50-81-7 – Calbiochem.
What is the difference between citric acid and citric acid monohydrate?
Citric acid can be obtained as an anhydrous (water-free) form or as a monohydrate. The anhydrous form crystallizes from hot water, while the monohydrate forms when citric acid is crystallized from cold water. The monohydrate can be converted to the anhydrous form at about 78 °C.
What is the difference between monohydrate and anhydrous?
What is the difference between Anhydrous and Monohydrate? Anhydrous means without water and monohydrate means containing one water molecule. Anhydrous form and the monohydrate form of chemicals may differ from their reactivity, color and phase.
What is the pH value of citric acid?
between 3–6
Citric acid has a pH level of between 3–6. This means it is a relatively weak acid. The pH scale spans 0–14, with 7 being neutral.
Are there different types of citric acid?
The first thing to know about citric acid is that there are two types. The first is derived from — you guessed it — citrus fruits, like oranges, lemons and limes. It’s also present to a lesser degree in tomatoes and berries. “This type of citric acid is naturally made and good for you.
How do you test the purity of citric acid?
The purity of citric acid is accomplished by using a titration method that uses sodium hydroxide as the titrant and phenolphthalein as the titration end-point indicator. The water content of citric acid is determined by Karl Fischer titration.
Is L-ascorbic acid and ascorbic acid the same?
Ascorbic acid, also known as vitamin C or L-ascorbic acid , is a naturally occurring organic compound with antioxidant properties. Ascorbic acid is found in plants and food, including citrus fruits, tomatoes and green vegetables.
Are citric acid and ascorbic acid the same?
While both are acids, they are not the same. Scientifically, their chemical structures are slightly different, which leads to different functionality. Citric acid is more acidic than ascorbic acid. Therefore, citric acid is recommended when canning tomatoes to lower the pH or increase acidity.
What is difference between anhydrous and monohydrate?
Anhydrous means without water and monohydrate means containing one water molecule. Anhydrous form and the monohydrate form of chemicals may differ from their reactivity, color and phase.
What is the difference between mono and anhydrous citric acid?
What is the Difference Between Anhydrous and Monohydrate Citric Acid? Anhydrous citric acid is the water-free form of citric acid but, the monohydrate citric acid is the water-containing form of citric acid. This is the main difference between anhydrous and monohydrate citric acid.
What is difference between monohydrate and dihydrate?
Such categories include monohydrated compounds, dehydrated compounds, etc. The main difference between anhydrous and dihydrate compounds is that anhydrous compounds have no water molecules whereas dihydrate compounds are composed of two water molecules per formula unit of the compound.
What is the difference between anhydrous citric acid and monohydrate citric acid?
The key difference between anhydrous and monohydrate citric acid is that the anhydrous citric acid has no water of crystallization whereas the monohydrate citric acid has a water molecule associated with one citric acid molecule. Citric acid is a weak organic acid, thus, we can find it naturally in the citrus fruits.