BUFFER SOLUTION

ChemicalBook > CAS DataBase List > 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) + (HF^2- ). 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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View Lastest Price from BUFFER SOLUTION manufacturers

Shaanxi Dideu Medichem Co. Ltd

Product: Buffer Solution 53744-42-6
Price: US $0.10/KG
Min. Order: 1KG
Purity: 99.0%
Supply Ability: 1000 tons
Release date: 2020-01-03

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