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PURIFIED TEREPTHALIC ACID

DESCRIPTION

PURIFIED TEREPHTHALIC ACID is an organic acid that is produced from Paraxylene oxidized with air, and followed by the Hydrogenation in Unit Terepthalic Acid and Unit Purified Terepthalic Acid.

PTA is a powder/white crystal that is not dissolved in water, chloroform, ether and acetate acid, but dissolved in alcohol and alkali (Na OH, KOH).

APPLICATION

PTA is used as the main raw material for polyester fiber thread for textile industry.

PTA is also processed as Polyester Chip that is as raw material for :

Polyester fiber: for textile industry, tire industry, seatbelts, reinforcement and heatproof jacket.
Polyester Filament : for polyester thread.
PET (Polyethylene Terepthalate) Bottle.
PET Film.

SPECIFICATION

No.	PARAMETER	UNIT	SPECIFICATION
1.	Apperance	-	White Powder
2.	Acod number	mg KOH/g	675± 2
3.	DMF Color (APHT)		Max 10
4.	Level of ash	ppm	Max 15
5.	Metals:
	Cobalt	ppm	Max 1
	Molibdenum	ppm	Max 1
	Mangan	ppm	Max 1
	Mangnesium	ppm	Max 1
	Nickel	ppm	Max 1
	Aluminum	ppm	Max 1
	Calcium	ppm	Max 2
	Natrium	ppm	Max 2
	Kalium	ppm	Max 2
	Iron	ppm	Max 2
	Titanium	ppm	Max 2
6.	Total Heavy Matal	ppm	Max 1
	(Mo, Cr, Ni, Co, Ti, Mg, Fe)		Max 10
7.	4-carboxi benzaldehida	ppm
8.	Volatile Matter % weight	ppm	Max 25 Max 0, 1
9.	p-Toluic acid	ppm	Max 150

MONOETHYLENE GLYCOL

DESCRIPTION

Monoethylene Glycol (MEG) is a colorless, virtually odorless and slightly viscous liquid. It is miscible with water, alcohols, aldehydes and many organic compounds. MEG will not dissolve rubber, cellulose acetate or heavy vegetable and petroleum oils.

APPLICATIONS

MEG is mainly used in the production of Polyester, Polyethylene Terephthalate (PET) and antifreeze solutions. It is an important dehydrating agent, good humectant and an industrial solvent.

PROPERTIES

MEG has low volatility and it is 50% more hygroscopic than glycerol at room temperature.

Molecular weight (g/mol)	62.08
Freezing point (°c)	-I3.0
Viscosity, at 200C (cp)	20
Specific heat, at (°c) (cal/gm/°c)	0.544
Boiling Point (°c)	197

SPECIFICATIONS

INSPECTION ITEMS	UNIT	SPECIFICATIONS
APPEARANCE	VISUAL	CLEAR
SPECIFIC GRAVITY	AT20/20°C	1.1153-1.1156
DISTILLATION RANGE	0C (A 760mm HG)	196 MIN 199 MAX
PURITY	WT%	99.9MIN
WATER	WT%	0.05 MAX
DEG CONTENT	WT%	0.05 MAX
ACIDITY (ACETIC ACID)	WT%	0.001MAX
IRON (Fe)	PPM (WT)	0.10MAX
UV TRANSMITTANCE:
WAVELENGTH %	NM	7OMIN
220	NM	9OMIN
275	NM	98MIN
350
ALDEHYDE (AS ACETALDEHYDE)	PPM (WT)	10MAX
CHLORIDE	PPM (WT)	0.5MAX
ASH	WT%	0.001MAX
PH AT2O0C		6.5-7.5
COLOR	APHA	5MAX

Flash point (°c)	121.1
Ignition point (°c)	400

PACKAGING

MEG is loaded after thorough cleaning and drying of tanks and nitrogen purging to ensure that it remains chloride, iron, and ash-free. Shipments made in tanks, tankers of varying capacities and in lined steel drums (220 liters).