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PBTCA

PBTCA

CAS No. 37971-36-1

 

Synonyms; 
PBTC; PBTCA; PHOSPHONOBUTANE TRICARBOXYLIC ACID; Fosfonobütan trikarboksilik asit; FOSFONOBÜTAN TRİKARBOKSİLİK ASİT; FOSFONOBÜTAN TRİKARBOKSİL ASİT; fosfonobütan tri karboksilik asid; Fosfonobütan Trikarboksilik asid; fosforbütan karboksilik asit; karboksi fosfonobütan asit; carboxyacid phosphonobutane; 2-Phosphonobutane -1,2,4-Tricarboxylic Acid; 2-Phosphonobutane-1,2,4-tricarboxylic acid PBTC; 1,2,4-Butanetricarboxylic acid, 2-phosphono-; 253-733-5; 2-Phosophonobutane-1,2,4-tricarboxylic acid; 2-Phosphono-1,2,4-butanetricarboxylic acid; 2-Phosphono-1,2,4-butantricarbonsäure; 2-Phosphonobutane-1,2,4-tricarboxylic acid; 37971-36-1; Acide 2-phosphono-1,2,4-butanetricarboxylique; PHOSPHONOBUTANETRICARBOXYLIC ACID; [37971-36-1]; 1,2,4-BUTANETRICARBOXYLIC ACID, 2-PHOSPHONO-, (2S)-; 2- Phosphonobutane ?1,2,4-tricarboxylic acid, tetra sodium salt; 2-Phenylethanol; 2-Phosphono butane-1,2,4-tricarboxylic acid; 2-PHOSPHONOBUTANE-1,2,4-TRICARBONIC ACID; 2-Phosphonobutane-1,2,4-tricarboxylic Acid (ca. 50% in Water); 2-Phosphonobutane-1,2,4-Tricarboxylic Acid (en); 2-Phosphonobutane-1,2,4-tricarboxylic acid(50% Aqueous solution); 2-phosphonobutane-1,2,4-tricarboxylicacid; '37971-36-1; 37971-63-1; 40372-66-5; 60-12-8; 850245-25-9; 94386-13-7; BR-34926; butane-1,2,4-tricarboxylic acid; 2-phosphono-Butanetricarboxylic acid; 2-phosphono-1,2,4-; MFCD01940753; PBTCa; SODIUM 1,2,4-BUTANETRICARBOXYLIC ACID 2-PHOSPHONATE; PBTC; PBTCA; PHOSPHONOBUTANE TRICARBOXYLIC ACID; 2-Phosphonobutane -1,2,4-Tricarboxylic Acid; 2-Phosphonobutane-1,2,4-tricarboxylic acid PBTC; PBTCA; PBTC; PHOSPHONOBUTANE TRICARBOXY; 2-Phosphonobutane -1, 2, 4-Tricarboxylic Acid; 1,2,4-Butanetricarboxylic acid, 2-phosphono-; PBTC; 2-Phosphonobutane-1,2,4-tricarboxylic acid; 1,2,4-Butanetricarboxylic acid, 2-phosphono-; 1,2,4-Butanetricarboxylic acid

 

 

Molecular Formula: C7H11O9P Molecular weight: 270.13

Structural Formula:

2-Phosphonobutane -1,2,4-Tricarboxylic Acid(PBTC)

 

Properties:
PBTC has low content of phosphoric, has structural features of both phosphoric acid and carboxylic acid group, which enable its excellent scale and corrosion inhibition properties. Its antiscale property under high temperature is far better than that of organophosphines. It can improve zinc salt solubility, has good chlorine oxidation tolerance and good composite synergy.

 

 

Specification:
Items Index
Appearance Clear, colorless to pale yellow aqueous solution
Active acid % 50.0 min
Phosphorous acid(as PO33-)% 0.5 max
Phosphoric acid(as PO43-)% 0.2 max
Density (20℃) g/cm3 1.27 min
pH(1% water solution) 1.5~2.0
Fe, mg/L 10.0 max
Chloride mg/L 10.0 max
Usage:
PBTC is a high efficient agent as scale and corrosion inhibitor. PBTC is the excellent stabilizer for zinc salt. It is widely used in circulating cool water system and oilfield refill water system as scale and corrosion inhibitor, suitable to composite with zinc salt and copolymer. PBTC can be used in situations of high temperature, high hardness, high alkali and high concentration index. In lavation fields, it is used as chelating agent and metal detergent.

 

PBTC is usually used together with zinc salt, copolymer, organophosphine, imidazole and other Water Treatment Chemicals. When used alone, the dosage of 5-15mg/L is preferred.

 

Package and Storage:
200L plastic drum,IBC(1000L),customers' requirement. Storage for one year in shady room and dry place.

 

 

Safety Protection:
Acidity, Avoid contact with eye and skin, once contacted, flush with water. 
2-Phosphonobutane -1,2,4-Tricarboxylic Acid
(PBTCA)
CAS No. 37971-36-1

 

Molecular Formula: C7H11O9P Molecular weight: 270.13

 

Structural Formula:
2-Phosphonobutane -1,2,4-Tricarboxylic Acid (PBTC)
Properties:
PBTC has low content of phosphoric, has structural features of both phosphoric acid and carboxylic acid group, which enable its excellent scale and corrosion inhibition properties. PBTC'santiscale property under high temperature is far better than that of phosphonates. Phosphonate PBTC can improve zinc salt solubility, has good chlorine oxidation tolerance and good composite synergy.

 

 

Specification:
Items Index
Appearance Clear, colorless to pale yellow aqueous solution
Active acid % 50.0-51.0
Phosphorous acid(as PO33-)% 0.5 max
Phosphoric acid(as PO43-)% 0.2 max
Density (20℃) g/cm3 1.27 min
pH(1% water solution) 1.5~2.0
Fe ppm 10.0 max
Chloride ppm 10.0 max
Turbidity (NTU) 10.0 max
Color APHA 30.0 max
Usage:
Phosphonate PBTC is a high efficient agent as scale and corrosion inhibitor. PBTC is the excellent stabilizer for zinc salt. It is widely used in circulating cool water system and oilfield refill water system as scale and corrosion inhibitor, suitable to composite with zinc salt and copolymer. PBTC can be used in situations of high temperature, high hardness, high alkali and high concentration index. In lavation fields, it is used as chelating agent and metal detergent.

 

 

PBTC is usually used together with zinc salt, copolymer, phosphonates, imidazole and otherWater Treatment Chemicals. When used alone, the dosage of 5-15mg/L is preferred.
Package and Storage:
200L plastic drum,IBC(1000L),customers' requirement. Storage for one year in shady room and dry place.
Safety Protection:
Acidity, Avoid contact with eye and skin, once contacted, flush with water. 2-Phosphonobutane-1,2,4-tricarboxylic acid (PBTCA) degradation by ozonation: Kinetics, phosphorus transformation, anti-precipitation property changes and phosphorus removal

 

PBTCA degradation kinetics by ozone molecule and hydroxyl radical was investigated for the first time.

Phosphorus transformation during PBTCA ozonation was elucidated in details.

Anti-precipitation property changes were evaluated during PBTCA ozonation.

Anti-precipitation property of transformation products generated during PBTCA ozonation was analyzed.

Ozonation-coagulation combination treatment was recommended in dealing with PBTCA.

 

Abstract
2-Phosphonobutane-1,2,4-tricarboxylic acid (PBTCA) is an antiscalant that is widely used in reverse osmosis (RO) systems. Because of its high concentration in RO concentrate, eutrophication risk and anti-precipitation properties may affect subsequent treatments, therefore treatment strategies are needed to eliminate such substances. In this study, PBTCA was degraded by ozonation. The results show that PBTCA reacted with ozone molecules and hydroxyl radicals, with second-order rate constants of (0.12 ± 0.002) and (7.83 ± 1.51) × 108 L mol-1 s-1, respectively. The phosphorus in PBTCA (PP) was transformed into organic phosphorus except for PBTCA (PO), and inorganic phosphorus (PI); PO was further transformed into PI. The changes in the concentrations of these phosphorus forms were investigated by model simulation. Simulation showed that the rate of PP transformation into PO was 5.5 times higher than that into PI. PBTCA was ozonated much faster at alkaline pH than at acidic pH. This is ascribed to different amounts of ozone molecules and hydroxyl radicals, and their different reaction rates with PBTCA. Furthermore, anti-precipitation property was reduced during ozonation, as shown by the amounts and morphology changes of the precipitates. PBTCA concentration for 50% anti-precipitation (AP50) did not change during ozonation, indicating that the transformation products generated during ozonation did not have anti-precipitation effects. Phosphorus in PBTCA was removed by ozonation-coagulation treatment. Total phosphorus and inorganic phosphorus were removed efficiently by using ferric chloride as a coagulant. The coagulants tended to bind with inorganic phosphorus to form flocs. Meanwhile, flocs were more easily to aggregate and precipitate as anti-precipitation effect was gradually removed, thus more phosphorus was removed. A combination of ozonation and coagulation removed PBTCA effectively and simultaneously reduced its anti-precipitation property and phosphorus.2-Phosphonobutane -1 2 4-Tricarboxylic Acid (PBTCA, PBTC) Production info The first reaction for PBTC production is between dialkyl phosphite (usually dimethyl phosphate in China) and maleic acid dimethyl ester under basic catalyst. Tetraalkyl ester of phosphonosuccinic acid forms and immediately reacted with methyl acrylate. The following thereupon saponification yields PBTCA. CAS No.: 37971-36-1 Molecular Formula: C7H11O9P Structural Formula: Properties: PBTC is excellent as both antiscalants and corrosion inhibitors. Because of its structural feature of carboxylic acid and phosphoric acid. It is stable and high effect in the condition of high hardness, temperature, pH value, and indexed matter concentration. While usually building with other organophosphates, polymers, imidazoles, PBTCA also widely works together with zinc salts whose solubility it will increase. PBTC also have a higher tolerance to oxidation agents like chlorine or bromine in the system. Specification: Items Index Appearance Colorless or light yellow transparent liquid Active acid % 49.0-51.0 Phosphorous acid(as PO33-)% 0.8 max Phosphoric acid (as PO43-)% 0.5 max pH (1% water solution) 1.5~2.0 Fe ppm 20 max Density (20℃) g/cm3 1.27 min Application: As an excellent inhibitor to both scale and corrosion, PBTCA is applied in refilling system and circulated cooling system for oil fields, steel mills, and mines. It is a good stabilizer to zinc salt. Besides, 2-phosphonobutane -1 2 4-tricarboxylic acid is used to chelate metal ions in lavation and detergent industries as metal detergent. In pH 7-10, 5-15 mg/L is recommended if only PBTC. Package and Storage: 200L drum, 1000L IBC tote. Transport Info: Corrosive. IMO class 8, UN 3265.. Water treatment agent PBTCA
Name: 2-Phosphonobutane -1,2,4-Tricarboxylic Acid(PBTCA)
CAS No.: 37971-36-1
Molecular Formula: C7H11O9P
Structural formula:

 

 

Molecular weight: 270.13
Properties:
Water Treatment chemical PBTCA, a good corrosion inhibitors, is widely used in circulating cool water system and oilfield water injection system antifouling treatment.
Water Treatment chemical PBTCA is used as a corrosion inhibitor for industrial water treatment. This product has excellent complexing ability with Ca2 +, Zn2 +, Cu2 +, Mg2 +. The suitable PH range is from 7.0 to 9.5. Itcan operate at high temperature, high hardness, and high alkalinity conditions. It allows coolingwater concentration factor increased to seven or more.

 

Specification

Items

Index

Appearance

Colorless or Light Yellow Transparent Liquid

Active Acid (PBTCA) %

50.0Min

Phosphorous Acid (as PO33-) %

0.5Max

Phosphoric Acid (as PO43- ) %

0.5Max

Density (20°C) g/cm3

1.25min

PH (1% Water Solution)

2.0 max

 

Application
Water Treatment chemical PBTCA is a high efficient agent as scale and corrosion inhibitor. It is the excellent stabilizer for zinc salt. It is widely used in circulating cool water system and oilfield refill water system as scale and corrosion inhibitor, suitable to composite with zinc salt and copolymer. It can be used in situationsof high temperature, high hardness, high alkali and high conc-entration index. In lavation fields, it isused as chelating agent and metal detergent. Water Treatment chemical PBTCA is usually used together with zinc, salt,copolymer, organophosphine, imidazole and other water treatment agents. When used alone, the dosage of 5-15mg/L is preferred.
Packaging & Shipping 
250kgs Plastic Drum or customer requirements, 20mt (250kgs Plastic Drum) with pallet in 20' FCL 22.5mt (1,250kgs IBC Drum) in 20' FCL 25mt ISO Tank.Acidity, Avoid contact with eye and skin, once contacted, flush with water.TYPICAL PRODUCT SPECIFICATIONS
MOLECULAR WEIGHT
270.13

 

 

COLOR
colorless to light yellow liquid

 

Use: ANTICORROSIVE, BUFFERING, CHELATING

 

CLASS
Specialty Chemicals PBTCA (2-Phosphonobutane -1,2,4-Tricarboxylic Acid)
PBTC; PBTCA; FOSFONOBUTANE TRICARBOXYLIC ASİT; 2-Fosfonobutan-1,2,4-Trikarboksilik Asit; 2-Fosfonobutan-1,2,4-trikarboksilik asit PBTC; Phosphonates and phosphonic acids are organophosphorus compounds containing C-PO(OH)2 or C-PO(OR)2 groups (where R = alkyl, aryl). Phosphonic acids, typically handled as salts, are generally nonvolatile solids that are poorly soluble in organic solvents, but soluble in water and common alcohols. Many commercially important compounds are phosphonates, including glyphosate (the active molecule of the herbicide "Roundup"), and ethephon, a widely used plant growth regulator. Bisphosphonates are popular drugs for treatment of osteoporosis.[1]

 

 

Clodronic acid is a bisphosphonate used as a drug to treat osteoporosis.
In biology and medicinal chemistry, phosphonate groups are used as stable bioisoteres for phosphate, such as in the antiviral nucleotide analogue, Tenofovir, one of the cornerstones of anti-HIV therapy.

 

 

Contents
1 Basic properties
2 Production
2.1 From phosphonic acid
2.2 Michaelis-Arbuzov reaction
2.3 From phosphorus trichloride
2.4 Bisphosphonates
3 Occurrence in nature
4 Uses
4.1 Metal chelants
5 Medicine
5.1 Niche uses
6 Toxicology
7 Biodegradation
8 Phosphonate compounds
9 See also
10 References
11 Further reading
Basic properties
Phosphonates feature tetrahedral phosphorus centers. They are structurally closely related to (and often prepared from) phosphorous acid.[2]
Phosphonic acids and derivatives are chemically and structurally related to phosphorous acid.
Phosphonate salts are the result of deprotonation of phosphonic acids, which are diprotic acids:

 

 

RPO(OH)2 + NaOH → H2O + RPO(OH)(ONa) (monosodium phosphonate)
RPO(OH)(ONa) + NaOH → H2O + RPO(ONa)2 (disodium phosphonate)
Phosphonate esters are the result of condensation of phosphonic acids with alcohols.

 

 

Production
Several methods exist for the preparation of phosphonic acids and their salts.

 

 

From phosphonic acid
Most processes begin with phosphorous acid (aka phosphonic acid, H3PO3), exploiting its reactive P-H bond.[1][2]

 

Phosphonic acid can be alkylated under Mannich conditions to give aminomethylated phosphonates, which are useful as complexants. One example is the industrial preparation of nitrilotris(methylenephosphonic acid):

 

NH3 + 3 H3PO3 + 3 CH2O → N(CH2PO3H2)3 + 3 H2O
Phosphonic acid also can be alkylated with acrylic acid derivatives to afford carboxyl functionalized phosphonic acids. This reaction is a variant of the Michael addition:

 

CH2=CHCO2R + 3 H3PO3 → (HO)2P(O)CH2CH2CO2R

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