Copolymer of Phosphono and carboxylic Acid (PCA)Properties: Through the introduction of phosphonic group into carboxylic group, PCA has good dispersion property for scale of calcium carbonate and calcium phosphate in circulating cool water system. It has good scale inhibition for barium sulfate, strontium sulfate and silica scale. PCA has advantages in wide range of water quality, chemical stability, strong chlorine tolerance, etc. PCA can be used as scale and corrosion inhibitor in circulating cool water system and oilfield refill water system. Specification: items index Appearance Amber liquid Solid content % 50.0 min Total phosphor (as PO43-)% 0.5 min Density ( 20℃)g/cm3 1.20-1.30 pH(1% water solution) 3.0-5.0 Usage:When used alone, the dosage of 5-20mg/L is preferred. It can also be used together with organophosphines, copolymer, zinc salt or BTA. Package and Storage: Normally In 250kg net Plastic Drum, IBC drum can also be used as required.Storage for ten months in room shady and dry place. Synonyms: PCA; POCA; dispersant PCA,Copolymer of Phosphono and carboxylic Acid; 1-phenyl-4-amino-5-chloropyridaz-6-one Shandong Taihe Water Treatment Co., Ltd.
Xiwangzhuang town, Shizhong district, Zaozhuang city, Shandong Province, P. R. China
Tel:+86-632-5113066 Fax:+86-632-5112055
Contacted person:
Eric Lee 86-15966754320 E-mail:lee@thwater.net
Website:
http://www.watertreatmentchemical.us
http://www.watertreatmentchemical.ru
http://www.watertreatmentchemical.tw
http://www.watertreatmentchemical.hk
http://www.watertreatmentchemical.in
http://www.thwater.net
To derive pH values for weak acids, you can use the equation pH = -log[H+], where [H+] is the concentration of hydrogen ions in the solution. For weak acids, you need to consider the equilibrium expression for the acid dissociation and solve for [H+]. Once you have [H+], you can calculate the pH using the equation stated earlier.
Red Planet Mars - 1952 is rated/received certificates of: USA:Approved (PCA #15801)
Lightning Strikes West - 1940 is rated/received certificates of: USA:Approved (PCA #6081)
The major blood supply to the midbrain, occipital lobe, and thalamus primarily comes from the posterior cerebral artery (PCA). The PCA branches off from the basilar artery and provides oxygenated blood to these regions of the brain. Additionally, branches from the posterior communicating artery can also contribute to the vascular supply of these areas.
Ring of Fire - 1961 is rated/received certificates of: Finland:K-16 Norway:16 Sweden:15 USA:Approved (PCA #19770)
Copolymer of Phosphono and carboxylic Acid (PCA)Through the introduction of phosphonic group into carboxylic group, PCA has good dispersion property for scale of calcium carbonate and calcium phosphate in circulating cool water system. It has good scale inhibition for barium sulfate, strontium sulfate and silica scale. PCA has advantages in wide range of water quality, chemical stability, strong chlorine tolerance, etc. PCA can be used as scale and corrosion inhibitor in circulating cool water system and oilfield refill water system.Specification:items index Appearance Colorless or light yellow liquid Solid content % 50.0 min Total phosphor (as PO43-)% 0.5 min Density (20℃)g/cm3 1.20-1.30 pH(1% water solution) 3.0-4.0 Usage:When used alone, the dosage of 5-20mg/L is preferred. It can also be used together with organophosphines, copolymer, zinc salt or BTA. Package and Storage:Normally In 250kg net Plastic Drum, IBC drum can also be used as required.Storage for ten months in room shady and dry place.Keywords: PCA Related Products: Copolymer of Phosphono and carboxylic Acid (PCA)Sodium of Polyaspartic Acid (PASP)Polyepoxysuccinic Acid (PESA)
zinc salt of L-pyrrolidone carboxylic acid. It inhibit the enzyme that catalyses the production of dihydroxytestosterone, a hormone that controls sebaceous gland activity. Zinc is also an antibacterial, and its salts are used to control dandruff.
Portrait Corporation of America (PCA)
The Green Archer - 1940 is rated/received certificates of: USA:Approved (PCA #6016) (Chapter 5) USA:Approved (PCA #6578) (Chapter 1) USA:Approved (PCA #6605) (Chapter 2) USA:Approved (PCA #6606) (Chapter 3) USA:Approved (PCA #6615) (Chapter 4) USA:Approved (PCA #6616) (Chapter 5) USA:Approved (PCA #6625) (Chapter 6) USA:Approved (PCA #6645) (Chapter 7) USA:Approved (PCA #6646) (Chapter 8) USA:Approved (PCA #6651) (Chapter 9) USA:Approved (PCA #6664) (Chapter 10) USA:Approved (PCA #6666) (Chapter 11) USA:Approved (PCA #6669) (Chapter 12) USA:Approved (PCA #6685) (Chapter 13) USA:Approved (PCA #6700) (Chapter 14) USA:Approved (PCA #6710) (Chapter 15)
3,4-dihydroxybenzoic acid, also known as Protocatechuic acid, is antioxidant and anti-inflammatory. It could reduce or enhance tumour growth. Similarly, PCA was reported to increase proliferation and inhibit apoptosis of neural stem cells.
#1:ikeem k. Johnson-pca #2 DaQuawn Crosby-pca #3: Tim clybourn-pca #4 Matt dawgello-pca #5 josh hoffman-pca #6 lanell buckner-pca
u can join zzz not pca
Sky Raiders - 1941 is rated/received certificates of: USA:Passed (National Board of Review) USA:Approved (PCA #6924) (Chapter 1) USA:Approved (PCA #6925 ) (Chapter 2) USA:Approved (PCA #6926) (Chapter 3) USA:Approved (PCA #6927) (Chapter 4) USA:Approved (PCA #6928) (Chapter 5) USA:Approved (PCA #6929) (Chapter 6) USA:Approved (PCA #6930) (Chapter 7) USA:Approved (PCA #6931) (Chapter 8) USA:Approved (PCA #6932) (Chapter 9) USA:Approved (PCA #6933) (Chapter 10) USA:Approved (PCA #6934) (Chapter 11) USA:Approved (PCA #6935) (Chapter 12)
The Amazing Exploits of the Clutching Hand - 1936 I is rated/received certificates of: UK:U USA:Passed (National Board of Review) USA:Approved (PCA #2066) (Chapter 1) USA:Approved (PCA #2067) (Chapter 2) USA:Approved (PCA #2068) (Chapter 3) USA:Approved (PCA #2069) (Chapter 4) USA:Approved (PCA #2083) (Chapter 5) USA:Approved (PCA #2084) (Chapters 6 and 7) USA:Approved (PCA #2086) (Chapter 8) USA:Approved (PCA #2087) (Chapter 9) USA:Approved (PCA #2093) (Chapter 10) USA:Approved (PCA #2094) (Chapter 11) USA:Approved (PCA #2094) (Chapter 11) USA:Approved (PCA #2095) (later: 12) USA:Approved (PCA #2096) (Chapter 13) USA:Approved (PCA #2097) (Chapter 14) USA:Approved (PCA #2102) (Chapter 15)
A PCA stands for practitioner certified assitant
is pca from zoey 101
are u taking abt Pca as in Zoey101 PCA???? if dat's the case iunno