PTA (Terephthalic acid)

CAS

Purity

CHARACTER

terephthalic acid (PTA), chemical formula C8H6O4, is a white crystal or powder, low toxicity and flammable. PTA is an important raw material for the production of polyester fiber, plastic and resin, which is widely used in clothing, home decoration, automobile industry and packaging, electronics, construction and other fields. PTA can be produced by oxidation of p-xylene or disproportionation of toluene and hydrofining at high temperature and pressure. PTA is esterified and polycondensed with ethylene glycol to produce polyesters, such as polyethylene terephthalate (PET), which are used to make fibers, bottles and films. PTA's excellent properties, such as wear resistance, wrinkle resistance and elasticity, make it an indispensable key raw material in modern industry. As an important organic chemical raw material, terephthalic acid has a wide range of applications in the national economy.

APPLICATIONS

(1) Terephthalic acid is an important raw material in the chemical industry, the main use is for the production of polyethylene terephthalate (PET),PET is an important polyester material, widely used in the manufacture of beverage bottles, food packaging materials and textile fibers.

(2) Terephthalic acid is also used in the manufacture of polyester fiber, polyester fiber because of its excellent mechanical properties and durability, commonly used in the production of clothing, furniture cloth and industrial textiles.

(3) Terephthalic acid is also used in the manufacture of polyester resins, which are widely used in the fields of coatings, adhesives and engineering plastics.

(4) In the pharmaceutical industry, terephthalic acid has a strong antibacterial effect and can be used to make antibiotics, anti-tuberculosis drugs and anti-inflammatory drugs.

(5) Terephthalic acid is also used in the pesticide industry and can be used to make fumigants and pesticides, mainly for the prevention and control of plant diseases.

(6) In the dye industry, terephthalic acid is mainly used to make various synthetic resin dyes, such as water-soluble, polyester dyes, and can also be used for printing and dyeing clothing and textiles.

(7) In addition, terephthalic acid is also used in the production of electronic products, such as photosensitive resistance materials, can also be used to make circuit board protective film, can also be used to make various types of rubber, as well as lubricants, detergents, light alloy and other products.

ABILITIES

1. Packing: bag, bulk cargo
2. Logistics: car transportation, shipping
3. Payment request: EXW/FOB/FCA/CFR only accepted

HONORARY

Chinese name	Terephthalic acid
English Name	Terephthalic acid
Alias	Jane Benzene phthalic acid phthalic acid terephthalic acid pure terephthalic acid terephthalic acid p-dibenzoic acid purified terephthalic acid terpineophthalic acid 1,4-Benzenetic Acid p-dibenzoic acid, p-phthalic acid terephthalic acid standard terephthalic acid, terephthalic acid terephthalic acid, terpineophthalic acid
English alias	PTA Terephthalic a P-Phthelic Acid p-Phthalic acid 1,4-phthalicacid Terephthalic acid acideterephtalique Acide terephtalique Kyselina terftalova 1,4-dicarboxybenzene Kyselina tereftalova acideterephtalique(french) Benzene-p-dicarboxylic acid Benzene-1,4-dicarboxylic acid (1aR,1bS,4aR,7aS,7bS,8R,9R,9aS)-4a,7b,9,9a-tetrahydroxy-3-(hydroxymethyl)-1,1,6,8-tetramethyl-1,1a,1b,4,4a,7a,7b,8,9,9a-decahydro-5H-cyclopropa[3,4]benzo[1,2-e]azulen-5-one
CAS	100-21-0
EINECS	202-830-0
Chemical formula	C8H6O4
molecular weight	166.13
InChI	InChI=1/C8H6O4/c1-9-5-13-18(24,15(9)22)7-11(8-21)6-12-14-17(3,4)20(14,26)16(23)10(2)19(12,13)25/h5-6,10,12-14,16,21,23-26H,7-8H2,1-4H3/t10-,12+,13-,14-,16-,18-,19-,20-/m1/s1
Density	1.58 g/cm3 at 25°C
melting point	>300°C (lit.)
boiling point	214.32°C (rough estimate)
Flash Point	260°C
water solubility	slightly soluble in water (0,017 g/L at 25°C)
Vapor pressure	<0.01mm Hg ( 20 °C)
solubility	15mg/l (experimental)
refractive index	1.5100 (estimate)
acidity coefficient	3.51(at 25℃)
PH value	3.36(1 mM solution);2.79(10 mM solution);2.26(100 mM solution)
Storage conditions	Sealed in dry,Room Temperature
Stability	stability. Combustible. Incompatible with strong oxidants.
Appearance	crystalline powder
Color	White
Merck	14,9162
BRN	1909333
Exposure Limits	ACGIH: TWA 10 mg/m3
physicochemical properties	white needle crystal or powder. Soluble in alkali solution, slightly soluble in hot ethanol, insoluble in water, ether, glacial acetic acid and chloroform.
MDL No.	MFCD00002558
Dangerous Goods Signs	Xi-Irritant Items
Risk Terms	36/37/38-Irritating to eyes, respiratory system and skin.
Security terminology	S26-After eye contact, rinse immediately with plenty of water and seek medical advice. , S36-Wear suitable protective clothing.
WGK Germany	3
RTECS	WZ0875000
TSCA	Yes
Customs number	2917 36 00
Upstream raw materials	coking xylene acetic acid
Downstream Products	1,4-Dimethyl phthalate Terephthalic acid dichloride Dioctyl terephthalate

Terephthalic acid -Properties

white needle crystal or powder. Combustible. Low toxicity. Density 1. 510g/cm3. Sublimation at about 402°C under normal pressure. In a sealed tube, it is melted at about 425°C. Soluble in alkali solution, slightly soluble in hot ethanol, insoluble in water, ether, glacial acetic acid and chloroform.

Terephthalic acid -preparation

Para-xylene low-temperature oxidation of raw materials in acetic acid solvent, with cobalt acetate (or manganese acetate) and bromide as catalyst, with three poly acetaldehyde as oxidation promoter, at 100 N130 ℃ temperature and 3MPa pressure, with air one-step low-temperature oxidation, reaction products with acetic acid washing, and then dried to product terephthalic acid.
p-xylene high temperature oxidation method p-xylene is oxidized in the presence of tetrabromoethane at a temperature of 220 ℃ and a pressure of 1.5 ~ 3MPa, using acetic acid as solvent, cobalt acetate and manganese acetate as catalysts. The reaction product is dissolved in water at 6.5 to 7.0 MPa to form an aqueous terephthalic acid solution. Then using palladium/activated carbon as catalyst for hydrogenation treatment, remove trace of carboxyl benzaldehyde, after crystallization, washing, drying, the product of terephthalic acid.

Terephthalic acid -Introduction

About 300°C sublimed without melting.

Terephthalic acid -Application

Manufacture of polyester fiber, film, plastic products, insulating paint and plasticizer important raw materials, also used as dye intermediates.

Terephthalic acid -safety

this product is low toxicity, its toxicity and phthalic acid is basically the same. For rats by oral LD50 6.Og/kg. The lethal dose for peritoneal injection was 800 mg/kg. The irritation of the skin is not as strong as phthalic acid, and it does not show sensitization. Allergic symptoms, wheezing, ulcers, etc. that occur during the production process are caused by impurities in the raw materials, and can be decomposed and detoxified in the same way as phthalic acid in the organism. In people with allergies, exposure to this product may cause a rash or bronchial asthma or bronchitis. Dust masks should be worn during operation. The maximum allowable concentration in air is 0. 1mg/m3.
The is packed in plastic bags or polypropylene woven bags, 20kg per bag. Store in a cool, ventilated and dry place. Heat, sun and moisture protection. It shall be stored and transported in accordance with the provisions of general combustible chemicals.

Terephthalic acid -Introduction

Purpose:
Terephthalic acid is the preparation of polyester fibers, plastics and resins of important raw materials. Also used in the preparation of dyes, coatings and fungicides and other chemicals.

Preparation Method: of
1. The most common method for preparing terephthalic acid is through the oxidation reaction of benzene. Benzene reacts with oxygen in the air at high temperature and pressure to produce phthalic anhydride, which is then heated and catalytically reduced to give terephthalic acid. 2.
It is also possible to produce terephthalic acid by the reaction of benzoic acid and an acid catalyst.

safety information: 1. terephthalic acid is a toxic chemical, contact or inhalation of
may be harmful to human health.
, 2. use should pay attention to protective measures, such as wearing respiratory protection devices, goggles and protective gloves. 3 in the operation should avoid the
of dust and steam, need to be in a ventilated place. 4.
terephthalic acid is irritating, may cause eye and skin irritation, contact should be promptly cleaned.

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Chemical Safety Data Sheet MSDS / SDS

Terephthalic acid

SECTION 1: Identification of the substance/mixture and of the company/undertaking

Product identifier

Product name: Terephthalic acid
CBnumber: CB8852557
CAS: 100-21-0
EINECS Number: 202-830-0
Synonyms: TEREPHTHALIC ACID,TPA

Relevant identified uses of the substance or mixture and uses advised against

Relevant identified uses: For R&D use only. Not for medicinal, household or other use.
Uses advised against: none

Company Identification

Company: Chemicalbook
Address: Building 1, Huihuang International, Shangdi 10th Street, Haidian District, Beijing
Telephone: 400-158-6606

SECTION 2: Hazards identification

GHS Label elements, including precautionary statements

Symbol(GHS)

Precautionary statements

P261 Avoid breathing dust/fume/gas/mist/vapours/spray.

P264 Wash hands thoroughly after handling.

P264 Wash skin thouroughly after handling.

P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing.

P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

P321 Specific treatment (see … on this label).

P332+P313 IF SKIN irritation occurs: Get medical advice/attention.

P337+P313 IF eye irritation persists: Get medical advice/attention.

P405 Store locked up.

Hazard statements

H315 Causes skin irritation

H319 Causes serious eye irritation

H335 May cause respiratory irritation

SECTION 3: Composition/information on ingredients

Substance

Product name: Terephthalic acid
Synonyms: TEREPHTHALIC ACID,TPA
CAS: 100-21-0
EC number: 202-830-0
MF: C8H6O4
MW: 166.13

SECTION 4: First aid measures

Description of first aid measures

If inhaled

If breathed in, move person into fresh air. If not breathing, give artificial respiration.

In case of skin contact

Wash off with soap and plenty of water.

In case of eye contact

Flush eyes with water as a precaution.

If swallowed

Never give anything by mouth to an unconscious person. Rinse mouth with water.

Most important symptoms and effects, both acute and delayed

The most important known symptoms and effects are described in the labelling (see section 2.2) and/or in section 11

Indication of any immediate medical attention and special treatment needed

No data available

SECTION 5: Firefighting measures

Extinguishing media

Suitable extinguishing media

Use water spray, alcohol-resistant foam, dry chemical or carbon dioxide.

Special hazards arising from the substance or mixture

Carbon oxides

Advice for firefighters

Wear self-contained breathing apparatus for firefighting if necessary.

Further information

No data available

SECTION 6: Accidental release measures

Personal precautions, protective equipment and emergency procedures

Avoid dust formation. Avoid breathing vapours, mist or gas. For personal protection see section 8.

Environmental precautions

No special environmental precautions required.

Methods and materials for containment and cleaning up

Sweep up and shovel. Keep in suitable, closed containers for disposal.

Reference to other sections

For disposal see section 13.

SECTION 7: Handling and storage

Precautions for safe handling

Provide appropriate exhaust ventilation at places where dust is formed. For precautions see section 2.2.

Conditions for safe storage, including any incompatibilities

Keep container tightly closed in a dry and well-ventilated place. Store in cool place.

Specific end use(s)

Apart from the uses mentioned in section 1.2 no other specific uses are stipulated

SECTION 8: Exposure controls/personal protection

control parameter

Hazard composition and occupational exposure limits

Does not contain substances with occupational exposure limits.

Exposure controls

Appropriate engineering controls

General industrial hygiene practice.

Personal protective equipment

Eye/face protection

Use equipment for eye protection tested and approved under appropriate government standards such as NIOSH (US) or EN 166(EU).

Skin protection

Handle with gloves. Gloves must be inspected prior to use. Use proper glove removal technique (without touching glove's outer surface) to avoid skin contact with this product. Dispose of contaminated gloves after use in accordance with applicable laws and good laboratory practices. Wash and dry hands.

The selected protective gloves have to satisfy the specifications of Regulation (EU) 2016/425 and the standard EN 374 derived from it.

Full contact

Material: Nitrile rubber

Minimum layer thickness: 0,11 mm Break through time: 480 min

Material tested:Dermatril? (KCL 740 / Aldrich Z677272, Size M)

Splash contact Material: Nitrile rubber

Minimum layer thickness: 0,11 mm Break through time: 480 min

Material tested:Dermatril? (KCL 740 / Aldrich Z677272, Size M)

data source: KCL GmbH, D-36124 Eichenzell, phone +49 (0)6659 87300, e-mail sales@kcl.de, test method: EN374

If used in solution, or mixed with other substances, and under conditions which differ from EN 374, contact the supplier of the CE approved gloves. This recommendation is advisory only and must be evaluated by an industrial hygienist and safety officer familiar with the specific situation of anticipated use by our customers. It should not be construed as offering an approval for any specific use scenario.

Body Protection

Choose body protection in relation to its type, to the concentration and amount of dangerous substances, and to the specific work-place., The type of protective equipment must be selected according to the concentration and amount of the dangerous substance at the specific workplace.

Respiratory protection

Respiratory protection is not required. Where protection from nuisance levels of dusts are desired, use type N95 (US) or type P1 (EN 143) dust masks. Use respirators and components tested and approved under appropriate government standards such as NIOSH (US) or CEN (EU).

Control of environmental exposure

No special environmental precautions required.

SECTION 9: Physical and chemical properties

Information on basic physicochemical properties

Appearancewhite powder
OdourNo data available
Odour ThresholdNo data available
pHNo data available
Melting point/freezing pointMelting point/range: >300 °C - lit.
Initial boiling point and boiling range214.32°C (rough estimate)
Flash point260°C
Evaporation rateNo data available
Flammability (solid, gas)No data available
Upper/lower flammability or explosive limitsNo data available
Vapour pressure< 0,01 hPa at 20 °C
Vapour densityNo data available
Relative density1,58 g/cm3 at 25 °C
Water solubilityca.0,017 g/l at 25 °C - slightly soluble
Partition coefficient: n-octanol/waterNo data available
Autoignition temperatureNo data available
Decomposition temperatureNo data available
ViscosityNo data available
Explosive propertiesNo data available
Oxidizing propertiesNo data available

Other safety information

No data available

SECTION 10: Stability and reactivity

Reactivity

No data available

Chemical stability

Stable under recommended storage conditions.

Possibility of hazardous reactions

No data available

Conditions to avoid

No data available

Incompatible materials

Strong oxidizing agents

Hazardous decomposition products

Hazardous decomposition products formed under fire conditions. - Carbon oxides Other decomposition products - No data available

In the event of fire: see section 5

SECTION 11: Toxicological information

Information on toxicological effects

Acute toxicity

LD50 Oral - Rat - male and female - > 15.380 mg/kg (OECD Test Guideline 401)
LC50 Inhalation - Rat - male and female - 2 h - > 2,02 mg/l (OECD Test Guideline 403)
LD50 Dermal - Rabbit - male and female - > 2.000 mg/kg (OECD Test Guideline 402)

Skin corrosion/irritation

Skin - Rabbit
Result: No skin irritation - 24 h (OECD Test Guideline 404)

Serious eye damage/eye irritation

Eyes - Rabbit
Result: No eye irritation (OECD Test Guideline 405)

Respiratory or skin sensitisation

No data available

Germ cell mutagenicity

Ames test
S. typhimurium Result: negative
Mutagenicity (micronucleus test) Mouse - male and female Result: negative

Carcinogenicity

IARC: No component of this product present at levels greater than or equal to 0.1% is identified as probable, possible or confirmed human carcinogen by IARC.

Reproductive toxicity

No data available

Specific target organ toxicity - single exposure

No data available

Specific target organ toxicity - repeated exposure

No data available

Aspiration hazard

No data available

Additional Information

RTECS: WZ0875000
To the best of our knowledge, the chemical, physical, and toxicological properties have not been thoroughly investigated.

Toxicity

LD50 orally in Rabbit: > 6400 mg/kg

SECTION 12: Ecological information

Toxicity

Toxicity to fish

semi-static test LC50 - Oryzias latipes - > 18,6 mg/l - 96 h (OECD Test Guideline 203)

Toxicity to daphnia and other aquatic invertebrates

Immobilization EC50 - Daphnia magna (Water flea) - > 20,1 mg/l - 48 h

(OECD Test Guideline 202)

Toxicity to algae

Growth inhibition EC50 - Pseudokirchneriella subcapitata (green algae) - > 19 mg/l - 72 h

(OECD Test Guideline 201)

Toxicity to bacteria

Respiration inhibition EC50 - Sludge Treatment - 1.393 mg/l - 3 h (OECD Test Guideline 209)

Persistence and degradability

Biodegradability aerobic - Exposure time 14 d

Result: 85,2 % - Readily biodegradable. (OECD Test Guideline 301B)

Bioaccumulative potential

No data available

Mobility in soil

No data available

Results of PBT and vPvB assessment

This substance/mixture contains no components considered to be either persistent, bioaccumulative and toxic (PBT), or very persistent and very bioaccumulative (vPvB) at levels of 0.1% or higher.

Other adverse effects

No data available

SECTION 13: Disposal considerations

Waste treatment methods

Product

Offer surplus and non-recyclable solutions to a licensed disposal company.

Incompatibilities

Combustible; dust may form an explosive mixture with air. Incompatible with arsenic compounds, diazo compounds, dithiocarbamates, isocyanates, mercaptans, nitrides, and sulfides , thiosulfates and dithionites. Incompatible with oxidizers ; contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides.

Waste Disposal

Dissolve or mix the material with a combustible solvent and burn in a chemical incinerator equipped with an afterburner and scrubber. All federal, state, and local environmental regulations must be observed.

Contaminated packaging

Dispose of as unused product.

SECTION 14: Transport information

UN number

ADR/RID: - IMDG: - IATA: -

UN proper shipping name

ADR/RID: Not dangerous goods IMDG: Not dangerous goods IATA: Not dangerous goods

Transport hazard class(es)

ADR/RID: - IMDG: - IATA: -

Packaging group

ADR/RID: - IMDG: - IATA: -

Environmental hazards

ADR/RID: no IMDG Marine pollutant: no IATA: no

Special precautions for user

No data available

SECTION 15: Regulatory information

Safety, health and environmental regulations/legislation specific for the substance or mixture

Regulations on the Safety Management of Hazardous Chemicals

China Catalog of Hazardous chemicals 2015:Not Listed. website: https://www.mem.gov.cn/

Measures for Environmental Management of New Chemical Substances

United States Toxic Substances Control Act (TSCA) Inventory:Listed. website: https://www.epa.gov/

Chinese Chemical Inventory of Existing Chemical Substances (China IECSC):Listed. website: https://www.mee.gov.cn/

European Inventory of Existing Commercial Chemical Substances (EINECS):Listed. website: https://echa.europa.eu/

Vietnam National Chemical Inventory:Listed. website: https://chemicaldata.gov.vn/

Korea Existing Chemicals List (KECL):Listed. website: http://ncis.nier.go.kr

New Zealand Inventory of Chemicals (NZIoC):Listed. website: https://www.epa.govt.nz/

Philippines Inventory of Chemicals and Chemical Substances (PICCS):Listed. website: https://emb.gov.ph/

EC Inventory:Listed.

SECTION 16: Other information

Abbreviations and acronyms

CAS: Chemical Abstracts Service
ADR: European Agreement concerning the International Carriage of Dangerous Goods by Road
RID: Regulation concerning the International Carriage of Dangerous Goods by Rail
IMDG: International Maritime Dangerous Goods
IATA: International Air Transportation Association
TWA: Time Weighted Average
STEL: Short term exposure limit
LC50: Lethal Concentration 50%
LD50: Lethal Dose 50%
EC50: Effective Concentration 50%

References

【1】CAMEO Chemicals, website: http://cameochemicals.noaa.gov/search/simple

【2】ChemIDplus, website: http://chem.sis.nlm.nih.gov/chemidplus/chemidlite.jsp

【3】ECHA - European Chemicals Agency, website: https://echa.europa.eu/

【4】eChemPortal - The Global Portal to Information on Chemical Substances by OECD, website: http://www.echemportal.org/echemportal/index?pageID=0&request_locale=en

【5】ERG - Emergency Response Guidebook by U.S. Department of Transportation, website: http://www.phmsa.dot.gov/hazmat/library/erg

【6】Germany GESTIS-database on hazard substance, website: http://www.dguv.de/ifa/gestis/gestis-stoffdatenbank/index-2.jsp

【7】HSDB - Hazardous Substances Data Bank, website: https://toxnet.nlm.nih.gov/newtoxnet/hsdb.htm

【8】IARC - International Agency for Research on Cancer, website: http://www.iarc.fr/

【9】IPCS - The International Chemical Safety Cards (ICSC), website: http://www.ilo.org/dyn/icsc/showcard.home

【10】Sigma-Aldrich, website: https://www.sigmaaldrich.com/

Disclaimer:

The information in this MSDS is only applicable to the specified product, unless otherwise specified, it is not applicable to the mixture of this product and other substances. This MSDS only provides information on the safety of the product for those who have received the appropriate professional training for the user of the product. Users of this MSDS must make independent judgments on the applicability of this SDS. The authors of this MSDS will not be held responsible for any harm caused by the use of this MSDS.

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