Hedp --1-Hydroxy Ethylidene-1

CAS :2809-21-4
Molecular Formula:C2H8O7P2
Molecular weight: 206.02
1, Properties
HEDP is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn etc. metal ions and form stable complex compound. It can dissolve the oxidized materials on these metals'surfaces. Under250OC HEDP shows excellent scale and corrosion inhibition ability. HEDP has good chemical stability under high pH value, hard to be hydrolyzed, and hard to be decomposed under ordinary light and heat conditions. Its acid/alkali and chlorine oxidation tolerance are better than that of other organophosphoric acids (salt). HEDP can react with metal ions in water system to form hexa-element chelating complex, with calcium ion in particular. Therefore, HEDP has good antiscale and visible threshold effects. When built together with other water treatment chemicals, it shows good synergistic effects.
The solid of HEDP is high purity product, suitable for using in winter and freezing districts. it is quite suitable for using as cleaning agent in electronic fields and as additives in daily chemicals.

2, Specification:
ITEMS
Index

Appearance
Colorless or light yellow transparent liquid
White crystal powder

Active content (as HEDP) % ¡Ý
50.060.0
89.0

Phosphorous acid (as PO33-)%¡Ü
2.02.0
0.80

Phosphoric acid(asPO43- )% ¡Ü
0.80.8
0.50

Chloride (as Cl-)% ¡Ü
1.01.0
0.10

pH (1% solution) ¡Ü
22
2.0

Density(20OC)g/cm3 ¡Ý
1.341.40
¡ª¡ª

Fe ion ppm ¡Ü
10 10
5.0.

3,HEDP Application range&using method
HEDP is widely used in the in circulating cool water system of electric power, chemical industry, metallurgy, fertilizer, etc. and widely used as a scale and corrosion inhibitor of low-pressure boilers, field waterflood, oil pipeline.
In light&textile industry, HEDP is used as detergent for metal and nonmetal. In dyeing industry, HEDP is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP is used as chelating agent. The dosage of 1-10mg/L is preferred as scale inhibitor, 10-50mg/L as corrosion inhibitor, and 1000-2000mg/L as detergent. Usually, HEDP is used together with polycarboxylic acid.

4,Safety Protection:HEDP is Acidity, Avoid contact with eye and skin, once contacted, flush with water.


Package and Storage:ATMP liquid: Normally In 30kg or 250kg net Plastic Drum;ATMP solid: 25kg inner liner polyethylene (PE) bag, outer plastic woven bag, or confirmed by clients request.Storage for ten months in room shady and dry place.

CAS No.2809-21-4
Dequest:2010
Molecular Formula:C2H8O7P2
Molecular weight: 206.02
Properties:
HEDP is an organophosphoric acid corrosion inhibitor. It can chelate with Fe, Cu, and Zn ions to form stable chelating compounds.It can dissolve the oxidized materials on these metals'surfaces. HEDP shows excellent scale and corrosion inhibition effects under temperature 250 centigrade degrees. HEDP has good chemical stability under high pH value, hard to be hydrolyzed, and hard to be decomposed under ordinary light and heat conditions. Its acid/alkali and chlorine oxidation tolerance are better than that of other organophosphoric acids (salt). HEDP can react with metal ions in water system to form hexa-element chelating complex, with calcium ion in particular. Therefore, HEDP has good antiscale and visible threshold effects. When built together with other water treatment chemicals, it shows good synergistic effects.
The solid state of HEDP is crystal powder, suitable for usage in winter and freezing districts. Because of its high purity, it can be used as cleaning agent in electronic fields and as additives in daily chemicals.
Specification:
Appearance:Colorless or light yellow transparent liquid;White crystal powder
Active contentú¿HEDPú¬%:58.0-62.0;89.0 min
Phosphorous acidú¿as PO33-ú¬%:2.0 max;0.5 max
Phosphoric acid ú¿asPO43- ú¬%:0.8 max;0.5 max
Chloride (as Cl-)%:0.01 max;0.01 max
pHú¿1% solutionú¬:2 max;2 max
Density ú¿20 centigrade degreesú¬g/cm3:1.40;
Fe ion ppm:10 max;20 max
Colour APHA (Hazen):40 max;
Usage:
HEDP is used as scale and corrosion inhibition in circulating cool water system, oil field and low-pressure boilers in fields such as electric power, chemical industry, metallurgy, fertilizer, etc.. In light woven industry, HEDP is used as detergent for metal and nonmetal. In dyeing industry, HEDP is used as peroxide stabilizer and dye-fixing agent; In non-cyanide electroplating, HEDP is used as chelating agent. The dosage of 1-10mg/L is preferred as scale inhibitor, 10-50mg/L as corrosion inhibitor, and 1000-2000mg/L as detergent. Usually, HEDP is used together with polycarboxylic acid.
Safety Protection:
Acidity, Avoid contact with eye and skin, once contacted, flush with water.

Package and Storage:
HEDP liquid: Normally In 250kg net Plastic Drum, IBC drum can also be used as required HEDP solid: 25kg inner liner polyethylene (PE) bag, outer plastic woven bag, or confirmed by clients.
Storage for ten months in room shady and dry place.

Appearance: Colorless or light yellow transparent liquid ;White crystal powder
Active content (HEDP)% : 58.0-62.0; 89.0 min
Phosphorous acid (as PO33-)% :2.0 max ;0.5 max
Phosphoric acid (asPO43- )%: 0.8 max ;0.5 max
Chloride (as Cl-)% :0.01 max ;0.01 max
pH (1úÑ solution) :2 max ;2 max
Density (20íµ)g/cm3 :1.40 -
Fe ion ppm : 10 max; 20 max
Colour APHA (Hazen): 40 max -


HEDP liquid: Normally In 250kg net Plastic Drum, IBC drum can also be used as required HEDP solid: 25kg inner liner polyethylene (PE) bag, outer plastic woven bag, or confirmed by clients.

Name: 2-hydroxy-6-naphthoic acid
Alias: 2,6 acid; 2-naphthol-6-carboxylic acid; 6-hydroxy-2-naphthoic acid; 6-hydroxy-2-naphthoic acid
CAS NOï¼?16712-64-4
Molecular formula: c11h7o3
Molecular weight: 187.172

Product quality standard:
Appearance characte Light yellow powder
Content 99%
2-naphtholâ?¤0.10%
2,3-acidâ?¤0.10%
melting point243-245�°C
Loss on dryingâ?¤0.30%
heavy metalâ?¤20ppm

Application: used in medicine, liquid crystal, paint, etc.

Packing: 25kg / cardboard barrel, or according to customer requirements

2-Naphthol Basic information
Chemical Properties Application Preparation
Product Name: 2-Naphthol
Synonyms: c.i.37500;c.i.azoiccouplingcomponent1;c.i.developer5;Developer A;Developer AMS;Developer BN;developera;developerams
CAS: 135-19-3
MF: C10H8O
MW: 144.17
EINECS: 205-182-7
Product Categories: Fluorescent;Naphthalene;pigments;alcohol;MICROCIDIN;Color Former & Related Compounds;Developer;Functional Materials;Intermediates;Aromatic Compounds;Alphabetical;Bioactive Small Molecules;Biochemicals and Reagents;Building Blocks;C9 to C20+;Cell Biology;Chemical Synthesis;Fluorescent Indicators and Probes;Fluorescent Probes;Labels;N;Organic Building Blocks;Oxygen Compounds;Particles and Stains;pH Sensitive Probes and Indicators;Phenols;Dyestuff Intermediates;Aromatics
Mol File: 135-19-3.mol


2-Naphthol Chemical Properties
Melting point 120-122 C(lit.)
Boiling point 285-286 C(lit.)
density 1,28 g/cm3
vapor density 4.97 (vs air)
vapor pressure 10 mm Hg ( 145.5 C)
refractive index 1.5762 (estimate)
Fp 153 C
storage temp. Refrigerator
solubility methanol: soluble1g/10 mL, clear, colorless to light yellow
pka 9.51(at 25C)
form Powder, Crystals or Granules
color White
PH Range Non& uorescence (8.5) to blue & uorescence (9.5)
Water Solubility 1 g/L (20 C)
�»max 226nm, 265nm, 275nm, 286nm, 320nm, 331nm
Merck 14,6384
BRN 742134
Stability: Stable. Combustible. Dust may form explosive mixture with air. Incompatible with strong oxidizing agents, phenol.
Major Application Display device, semiconductors, photoimaging materials, inks, toner, chalk, security paper, molding materials, tin plating method, rubber, adhesive, leather, detergent, hair dyes, antimitotic drug, anticancer agent, antiinflammatory agent, treatment of acne vulgaris (pimples) and other dermal ailments (rashes, scratches, blemishes, hair loss), disorders
InChIKey JWAZRIHNYRIHIV-UHFFFAOYSA-N
CAS DataBase Reference 135-19-3(CAS DataBase Reference)
NIST Chemistry Reference 2-Naphthalenol(135-19-3)
EPA Substance Registry System 2-Naphthalenol (135-19-3)

Safety Information
Hazard Codes Xn,N
Risk Statements 20/22-50
Safety Statements 24/25-61
RIDADR UN 3077 9/PG 3
WGK Germany 2
RTECS QL2975000
F 8
Autoignition Temperature 430 C
TSCA Yes
HazardClass 9
PackingGroup III
HS Code 29071590
Hazardous Substances Data 135-19-3(Hazardous Substances Data)
Toxicity LD50 orally in Rabbit: 1960 mg/kg LD50 dermal Rabbit > 10000 mg/kg


2-Naphthol Usage And Synthesis

2-Naphthol Preparation Products And Raw materials

Hydroxypropyl distarch phosphate (HDP) is a modified resistant starch. It is currently used as a food additive (INS number 1442). It is approved for use in the European Union (listed as E1442), the United States, Australia, Taiwan, and New Zealand.

HEDP is an organ phosphoric acid corrosion inhibitor. It can chelate with FE, cu, and ZN ions to form stable chelating compounds. It can dissolve the oxidized materials on these metals surfaces. HEDP shows excellent scale and corrosion inhibition effects under temperature 250¡æ. HEDP has good chemical stability under high ph value, hard to be hydrolyzed, and hard to be decomposed under ordinary light and heat conditions. Its acid/alkali and chlorine oxidation tolerance are better than that of other organ phosphoric acids (salt). HEDP can react with metal ions in water system to form hexa-element chelating complex, with calcium ion in particular. Therefore, HEDP has good antiscale and visible threshold effects. When built together with other water treatment chemicals, it shows good synergistic effects.
The solid state of HEDP is crystal powder, suitable for usage in winter and freezing districts. Because of its high purity, it can be used as cleaning agent in electronic fields and as additives in daily chemicals.

Appearance: colorless or light yellow transparent liquid
Active content HEDP : 58.0-62.0
Phosphorous acid as po33-%: 2.0 max
Phosphoric acid aspo43- %: 0.8 max
Chloride (as cl-)%: 0.01 max
Ph 1 solution: 2 max
Density 20¡æg/cm3: 1.40
Fe ion ppm : 10 max
Colour alpha (hazen): 40 max.