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CAS RN: 490-79-9 | Product Number: D2933

2,5-Dihydroxybenzoic Acid [Matrix for MALDI-TOF/MS]


Purity: >99.0%(GC)(T)
Synonyms:
  • Gentisic Acid
  • DHBA
Product Documents:
1G
NT$1,440
12   0   It can be shipped in about 2 weeks after ordering
5G
NT$3,800
26   ≥80  Contact Us

* The above prices include freight cost, customs, and other charges to the destination except for products that need to be shipped by sea or dry ice. For details, please contact our distributor in Taiwan to order our product.
* The storage conditions are subject to change without notice.


Product Number D2933
Purity / Analysis Method >99.0%(GC)(T)
Molecular Formula / Molecular Weight C__7H__6O__4 = 154.12 
Physical State (20 deg.C) Solid
Storage Temperature Room Temperature (Recommended in a cool and dark place, <15°C)
Packaging and Container 1G-Glass Bottle with Plastic Insert (View image)
CAS RN 490-79-9
Reaxys Registry Number 2209119
SDBS (AIST Spectral DB) 1398
Merck Index (14) 4398
MDL Number

MFCD00002460

Specifications
Appearance White to Light yellow powder to crystal
Purity(GC) min. 99.0 %
Purity(Neutralization titration) min. 99.0 %
Properties (reference)
Melting Point 206 °C(dec.)
Solubility (soluble in) Ether, Alcohol
Solubility (insoluble in) Benzene, Chloroform
GHS
Pictogram Pictogram
Signal Word Warning
Hazard Statements H315 : Causes skin irritation.
H319 : Causes serious eye irritation.
H412 : Harmful to aquatic life with long lasting effects.
Precautionary Statements P501 : Dispose of contents/ container to an approved waste disposal plant.
P273 : Avoid release to the environment.
P264 : Wash skin thoroughly after handling.
P280 : Wear protective gloves/ eye protection/ face protection.
P302 + P352 : IF ON SKIN: Wash with plenty of water.
P337 + P313 : If eye irritation persists: Get medical advice/ attention.
P305 + P351 + P338 : IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
P362 + P364 : Take off contaminated clothing and wash it before reuse.
P332 + P313 : If skin irritation occurs: Get medical advice/ attention.
Related Laws:
RTECS# LY3850000
Transport Information:
H.S.code* 2918.29-000
*This code is applied to the products when TCI exports from Japan and not for import in your country.
Application
A Matrix for MALDI TOF Mass Spectrometry

Matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry is a standard soft ionization technique in mass spectrometry. 2,5-Dihydroxybenzoic acid (DHB) and its butylamine salt (DHBB) [D5355] are often used as a matrix for MALDI-TOF mass spectrometry, for oligosaccharide, lipid and polar synthetic polymer analysis in particular. Moreover, DHB can be used for small molecules which are not ionized by other matrixes. Incidentally, IUPAC defined standard terms relating to mass spectrometry in 2013 (free access).

References


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