Glacial Acetic Acid Molar Mass

Glacial acetic acid - Names and Identifiers

Glacial acerb acid - Physico-chemical Properties

Molecular Formula	C2H4O2
Molar Mass	lx.05
Density	one.048
Melting Point	16-16.5℃
Boling Betoken	117-118℃
Flash Indicate	40℃
H2o Solubility	miscible
Refractive Index	one.3715
Physical and Chemical Backdrop	Characteristics of colorless transparent liquid, irritating odor. melting point sixteen.635 ℃ boiling point 117.9 ℃ relative density 1.0492 refractive index i.3716 flash point 57 ℃ solubility in water, ethanol, benzene and ether miscible, insoluble in carbon disulfide.
Use	Mainly used for the preparation of acerb anhydride, vinyl acetate, acerb acid esters, metal acetate, chloroacetic acrid, cellulose acetate, used in the production of ethyl acetate, edible spices, wine spices used as belittling reagents, solvents and balm

Glacial acetic acrid - Risk and Safety

Chance Symbols	C - Corrosive
Gamble Codes	R10 - Flammable R35 - Causes severe burns
Prophylactic Description	S23 - Practise not breathe vapour. S26 - In case of contact with eyes, rinse immediately with enough of water and seek medical communication. S45 - In case of blow or if you feel unwell, seek medical advice immediately (show the characterization whenever possible.)
UN IDs	United nations 2789

Glacial acetic acid - Upstream Downstream Manufacture

Glacial acetic acrid - Nature

A colorless transparent liquid solidifies every bit ice-like crystals at low temperature. Irritating odor. With water, ethanol, ethyl ether and carbon tetrachloride and other organic solvents miscible, insoluble in carbon disulfide. Flammable, corrosive, strong irritation, tin cause human burns. Combustible, its vapor and air can form an explosive mixture, in the case of open flame, high oestrus free energy caused past combustion explosion. Contact with chromic acid, sodium peroxide, nitric acid or other oxidizing agents, there is a hazard of explosion.

Last Update：2022-01-01 09:25:15

Glacial acetic acid - Standard

This product contains c2H4 O2 not less than 99.0% (k/chiliad).

Concluding Update：2022-01-01 11:22:06

Glacial acetic acrid - Preparation Method

potassium permanganate was added to industrial acetic acid and dissolved. The acetic acid was distilled off in a distillation cavalcade. Appropriate amount of chromic anhydride was added to dissolve, and the semen of the upper layer was distilled. Accept the heart fraction is glacial acetic acid.

Last Update：2022-01-01 09:25:15

Glacial acetic acid - Trait

This product is a colorless clear liquid or colorless crystal block; There is a stiff special odour.
This production tin exist mixed with water, ethanol, glycerin or most of the volatile oil and fatty oil.

freezing point

The freezing signal of this product (Full general 0613) is non less than 14.8°C.

Last Update：2022-01-01 11:22:06

Glacial acetic acid - Use

Common belittling reagents. General solvents and non-aqueous titration solvents. For the industry of acetate, cellulose acetate, pharmaceuticals, pigments, esters, plastics, spices and so on.

Final Update：2022-01-01 09:25:15

Glacial acetic acid - Differential diagnosis

have lmL of this product, add together water lm fifty, neutralize with sodium hydroxide test solution, add together ferric chloride test solution, that is, deep red; Eddy, that is, generate crimson-chocolate-brown precipitate; Add muriatic acid, that is, dissolve into yellow solution.
accept a small amount of this production, add sulfuric acrid and a small amount of ethanol, heating, the occurrence of ethyl acetate smell.

Last Update：2022-01-01 xi:22:07

Glacial acetic acid - Rubber

rat oral LD50:3530mg/kg; Rabbit percutaneous LDso: 1060mg/kg; Mouse Inhalation thLC50:13791mg/m3. Corrosive. Inhalation of this production vapor on the nose, throat and respiratory tract irritation. It has a strong stimulating effect on the eyes. Protection, flowing water rinse. Mixed loading and transportation with oxidant, brine and edible chemicals are strictly prohibited. Store in a cool, ventilated warehouse. Keep away from fire and estrus source. Keep the container sealed. Should be stored separately from the oxidant, alkali.

Final Update：2022-01-01 09:25:sixteen

Glacial acerb acrid - Exam

chloride

take 10ml of this product and add together 20ml of water. Inspection co-ordinate to law (Full general dominion 0801), compared with the standard sodium chloride solution 4.0 ML fabricated of the command solution, not deeper (0. 0004%).

sulfate

take 20ml of this product, add together 1% anhydrous sodium carbonate solution lm l, put the water bath to dry, check co-ordinate to constabulary (General rule 0802), and standard potassium sulfate solution 1. Compared with the control solution made of 0M l, information technology should not be deeper (0.0005%).

formic acrid and easy chloride

have 5ml of this product, add 10ml of water to dilute, Take 5 m l, add potassium dichromate titration solution (0.016 67mol/L)2. 5 one thousand l and sulfuric acid 6 yard 50, identify for 1 min, and then add h2o 20ml, absurd to 15°C, add together potassium iodide test solution lm fifty, should exist dark yellow or brown.

acetaldehyde

take 1.8ml of this product, counterbalance it accurately, put it in a 10ml measuring flask, dilute it with water to the calibration, milkshake it well, accept 2. 5ml, add iii. 2mol/L sodium hydroxide solution 2.5M l, immediately sealed, shake, as a examination solution; Another advisable corporeality of acetaldehyde reference, precision weighing, with 1 .6 m d /L sodium acetate solution was diluted to make near O .O lm g solution, precision take five m l, elevation empty canteen, sealed, as a reference solution. According to the conclusion method of residue solvent (General rule 08 6 ane second method), the capillary cavalcade with polyethylene glycol polysiloxane every bit stationary liquid is used as the column: The cavalcade temperature is 35 ° C. For v minutes, heating to 120°C at a rate of iii per minute (TC for 2 minutes; Inlet temperature ii 0 0°C; Detector temperature 2 5 0°C; Head space equilibrium temperature 80°C, equilibration time was thirty min. The test solution and the reference solution are injected into the headspace respectively, and the chromatogram is recorded. The peak surface area is calculated according to the external standard method, and the acetaldehyde content shall not exceed 0. 01%.

potassium permanganate reducing substance

take 2ml of this product, add 10ml of water and 0. 10ml of potassium permanganate titration solution (0. 02mol/L), milk shake, place for 30 minutes, and the pink color should not disappear completely.

Not-volatile

Take 20ml of this product, put it in an evaporation dish with a abiding weight of 105 ° C., evaporate it on a water bath and dry out it to a constant weight at 105 ° C., and the remaining residuum should not pass 1 LG.

moisture

take this product, according to the moisture determination method (General 0832 commencement method), the water content shall not exceed twenty%.

Iron Salt

take 2ml of this product, put it on a h2o bath to dry, add 15ml of water, dissolve at a slight temperature, add together an appropriate amount of water to brand 25ml, check according to law (General rule 0807), and standard atomic number 26 solution 1. Compared with the control solution made of 0M l, it should not be deeper (0.0005%).

Heavy metals

take one 0ml of this product, put it on a water bath to dry out, add 2ml of acetate buffer (ph3.v) and 15ml of water, dissolve it at a slight temperature, add an advisable amount of water to make information technology 25ml, inspection according to law (General Principles 0821, constabulary I), containing heavy metals shall not exceed two parts per one thousand thousand.

Concluding Update：2022-01-01 11:22:07

Glacial acetic acid - Content determination

accept nigh 2 m fifty of this product, place it in a plug Erlenmeyer flask, weigh it accurately, add 40ml of fresh boiling water and iii drops of phenolphthalein indicator solution, and apply sodium hydroxide titration solution (lm d /L) titration. Each lm l sodium hydroxide titration solution (lm o l/50) corresponds to 60.05 mg of C2 H4 O2.

Terminal Update：2022-01-01 11:22:08

Glacial acetic acid - Category

pharmaceutical excipients, p H value regulator and solvent.

Last Update：2022-01-01 eleven:22:08

Glacial acetic acid - Storage

sealed storage.

Last Update：2022-01-01 11:22:08