ChemicalBook > CAS DataBase List > BUFFER SOLUTION

BUFFER SOLUTION

Product Name
BUFFER SOLUTION
CAS No.
53744-42-6
Chemical Name
BUFFER SOLUTION
Synonyms
PBS;BUFFER;PHOSPHATE BUFFER SOLUTION;PHOSPHATE BUFF, PH 7.5;BUFFER O;BUFFER, PH 7.5;BUFFER, PH 1.0;BUFFER, PH 1.2;BUFFER, PH 2.5;PH 11.00 BUFFER
CBNumber
CB9340936
Molecular Formula
C24H17N2NaO6S2
Formula Weight
516.52
MOL File
53744-42-6.mol
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BUFFER SOLUTION Property

Melting point:
300 °C
Density 
1.006 g/mL at 20 °C
vapor density 
4.9 (vs air)
storage temp. 
Inert atmosphere,Room Temperature
solubility 
H2O: soluble
form 
Liquid
color 
No Color
Exposure limits
ACGIH: TWA 2.5 mg/m3
NIOSH: IDLH 250 mg/m3; TWA 2.5 mg/m3
EPA Substance Registry System
Benzenesulfonic acid, 4,4'-(1,10-phenanthroline-4,7-diyl)bis-, disodium salt (53744-42-6)
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Safety

Hazard Codes 
Xi,C
Risk Statements 
36/38-36/37/38-36-52/53-35-67
Safety Statements 
26-36-24/25-37/39-61-45-36/37/39
RIDADR 
UN2817
WGK Germany 
3
F 
8-10
HS Code 
2933.99.8210
HazardClass 
8
PackingGroup 
III
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Hazard and Precautionary Statements (GHS)

Symbol(GHS)
Signal word
Warning
Hazard statements

H315Causes skin irritation

H319Causes serious eye irritation

H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust/fume/gas/mist/vapours/spray.

P305+P351+P338IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

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N-Bromosuccinimide Price

TCI Chemical
Product number
B0989
Product name
Bathophenanthrolinedisulfonic Acid Disodium Salt Hydrate[for Determination of Ferrous Ion]
Packaging
1g
Price
$203
Updated
2024/03/01
Alfa Aesar
Product number
044627
Product name
Buffer HF-Improved
Packaging
250ml
Price
$29.7
Updated
2023/06/20
Alfa Aesar
Product number
044627
Product name
Buffer HF-Improved
Packaging
1L
Price
$72.3
Updated
2023/06/20
GFS CHEMICALS
Product number
18364
Product name
BUFFERPH12.45
Packaging
6x500mL
Price
$82.07
Updated
2021/12/16
GFS CHEMICALS
Product number
18393
Product name
BUFFERPH3.00
Packaging
6x500mL
Price
$82.07
Updated
2021/12/16
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BUFFER SOLUTION Chemical Properties,Usage,Production

Uses

Used for pretreatment of planar silicon devices when plating with Nickel plating solution products 44069 and 44070.

Uses

Use of Buffer HF improved:

  • Buffer HF improved dissolves silica films (both thermally grown and silane SiO2) produced on the surfaces of silicon and exposed by photolithography. It also is capable of dissolving doped silica films such as phosphosilica and borosilica glasses as formed in semiconductor processing. The overall chemical reaction is: 4HF + SiO2 SiF4 + 2H2O
  • For trouble-free operation Buffer HF improved is recommended in the new technologies for manufacture of semiconductor planar and mesa devices. It is compatible with both negative and positive photoresists. Excellent results with good reproducibility are simple to achieve without undercutting marked oxides, surface staining or device degradation by metallic impurities.

Uses

Use of Buffer HF improved:

Buffer HF improved dissolves silica films (both thermally grown and silane SiO2) produced on the surfaces of silicon and exposed by photolithography. It also is capable of dissolving doped silica films such as phosphosilica and borosilica glasses as formed in semiconductor processing.
The overall chemical reaction is: 4HF + SiO2 SiF4 + 2H2O
For trouble-free operation Buffer HF improved is recommended in the new technologies for manufacture of semiconductor planar and mesa devices. It is compatible with both negative and positive photoresists. Excellent results with good reproducibility are simple to achieve without undercutting marked oxides, surface staining or device degradation by metallic impurities.

Definition

ChEBI: Disodium 4,7-diphenyl-1,10-phenanthroline 4',4''-disulfonate is an organic sodium salt having 4,7-diphenyl-1,10-phenanthroline 4',4''-disulfonate as the counterion. It has a role as an iron chelator. It contains a 4,7-diphenyl-1,10-phenanthroline 4',4''-disulfonate.

General Description

Improved HF Buffer System with stabilized HF activity - selective solvent for SiO2 used in semiconductor technology of planar passivated devices - transistors, integrated circuits, diodes, rectifiers, SCR, MOS, FET

Advantages:

  • Ready-to-use - Economical
  • HF activity buffer stabilized
  • Excellent process reproducibility
  • Does not undercut masked oxide
  • Will not stain diffused silicon surfaces
  • Avoids contamination on silicon surfaces
  • Photoresist coating unaffected

Buffer HF improved is an idealized buffer preparation characterized by a high buffer index and an optimized, uniform oxide-etch rate. The composition of buffer HF improved is precisely controlled by HF activity measurements and electrometric pH. The mass balance corresponds essentially to (HF) + (F) + 2(HF2) for a two-ligand mononuclear complex and the charge balance is (H+) - (F) + (HF2- ). The HF activity is maintained constant through the specific equilibrium constant which regulates the equilibrium reaction between fluoride, bifluoride, and HF buffer components. A second equilibrium constant participates in the regulation of the hydronium in concentration of pH.

Buffer HF improved is produced and analyzed to be essentially free of impurities. Nitrate ions, a common impurity causing stains on diffused silicon surfaces, are specifically removed. Heavy metal impurities, which can lead to degradation of device characteristics, are rigidly controlled under manufacturing process specifications.

BUFFER SOLUTION Preparation Products And Raw materials

Raw materials

Preparation Products

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BUFFER SOLUTION Suppliers

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53744-42-6, BUFFER SOLUTIONRelated Search:

Magnesium sulfate 4-METHYL-1,10-PHENANTHROLINE TRIS(BATHOPHENANTHROLINEDISULFONATE)RUTH 4-Phenylpyridine Pyridinium p-Toluenesulfonate 4,7-Dimethyl-1,10-phenanthroline Bathophenanthroline BUFFER SOLUTION 1,10-Phenanthroline hydrate PH STANDARD SOLUTION PHTHALATE BUFFER BUFFER SOLUTION, PH 10.00 +/-0.02, BLUE,BUFFER SOLUTION, PH 10.00 +/-0.02, COLORLESS, CARBONATE,BUFFER SOLUTION PH 10.00 BUFFER SOLUTION PH 7.00 BUFFER SOLUTION PH 5.00,BUFFER SOLUTION PH 5.00 Buffer solution, pH 4.00 (^+0.01 @ 25^oC), Colored Red, Specpure|r, NIST Traceable Buffer solution, pH 1.00 (±0.01 at 25°C), No Color, Specpure, NIST Traceable BUFFER SOLUTION, PH 4.63,BUFFER SOLUTION, PH 4.0, ACETATE,BUFFER ACETATE,BUFFER ACETATE, PH 4.00 Potassium hydrogen phthalate Sodium acetate trihydrate

  • 1,10-Phenanthroline,4,7-di(phenylsulfonicacid)-,disodiumsalt
  • 4,4’-(1,10-phenanthroline-4,7-diyl)bis-benzenesulfonicacidisodiumsalt
  • 4,7-di(4-Phenylsulfonicacid)-1,10-phenanthroline,disodiumsalt
  • Benzenesulfonicacid,4,4’-(1,10-phenanthroline-4,7-diyl)bis-,disodiumsalt
  • BATHOPHENANTHROLINEDISULFONIC ACID, DISODIUM SALT HYDRATE
  • BATHOPHENANTHROLINE DISULFONIC ACID NA2-SALT H20
  • SODIUM PHOSPHATE DIBASIC-SODIUM HYDROXIDE BUFFER
  • TE BUFFER SOLUTION, PH 8.0
  • RED HIGH-ACCURACY BUFFER SOLUTION, PH 4.000
  • REFERENCE BUFFER SOLUTION
  • PBS
  • PHOSPHATE-CHLORINE BUFFER
  • PHOSPHATE BUFF, PH 7.5
  • PHOSPHATE BUFFER, PH 5.8
  • PHOSPHATE BUFFER SOLUTION
  • PHOSPHATE BUFF, PH 7.2
  • PH 11.00 BUFFER
  • POTASSIUM PHOSPHATE MONOBASIC - SODIUM PHOSPHATE DIBASIC BUFFER
  • POTASSIUM CHLORIDE-HYDROCHLORIC ACID BUFFER
  • POTASSIUM CARBONATE-POTASSIUM BORATE-POTASSIUM HYDROXIDE BUFFER
  • POTASSIUM ACID PHTHALATE-HYDROCHLORIC ACID BUFFER
  • POTASSIUM ACID PHTHALATE - SODIUM HYDROXIDE BUFFER
  • BUFFER SOLUTION PH 6.79
  • BUFFER SOLUTION PH 6.86
  • BUFFER SOLUTION PH 6.865
  • BUFFER SOLUTION PH 6.88
  • BUFFER SOLUTION PH 6.00
  • BUFFER SOLUTION PH 5.00
  • BUFFER SOLUTION, PH 5.00, +0.02
  • BUFFER SOLUTION, PH 5.0
  • BUFFER SOLUTION PH 7.413
  • BUFFER SOLUTION, PH 7.2, PHOSPHATE
  • BUFFER SOLUTION PH 7.70
  • BUFFER SOLUTION PH 8.00
  • BUFFER SOLUTION, PH 9.0
  • BUFFER SOLUTION PH 9.00 BLUE
  • BUFFER SOLUTION PH 9.180
  • BUFFER SOLUTION PH 9.22
  • BUFFER SOLUTION PH 9.23
  • BUFFER SOLUTION PH 9.00
  • BUFFER SOLUTION, PH 8.0
  • BUFFER SOLUTION PH 8.90
  • BUFFER SOLUTION, PH 9.54
  • BUFFER SOLUTION, TISAB
  • BUFFER TNE 10X SOLUTION
  • BUFFER TABLETS, PH 6.4
  • BUFFER TABLETS, PH 6.8
  • BUFFER TABLETS, PH 7.2
  • BUFFER TRIS, ACN AND EDTA SOLUTION
  • BUFFER TRIS ACN, EDTA, NACL SOLUTION
  • BUFFER SOLUTION
  • BUFFER SOLUTION A
  • BUFFER RINSE SOLUTION
  • BUFFER, SODIUM PHOSPHATE, PH 7.0
  • BUFFER SODIUM PHOSPHATE, PH 7.4
  • BUFFER PHOSPHATE, PH 7.40
  • BUFFER POTASSIUM PHOSPHATE
  • BUFFER SOLUTION PH 10.00