1.01252

Starch

soluble GR for analysis ISO

• Synonym(s): Starch, Amylum, Potato starch for determination of diastase
• Linear Formula: (C₆H₁₀O₅)_n
• UNSPSC Code: 12352201
• EC Index Number: 232-686-4
• NACRES: NA.79
• MDL number: MFCD00082026

Properties

• agency: reag. ISO
• Quality Segment: 100
• form: solid
• pH: 6.0-7.5 (25 °C, 20 g/L in H₂O)
• solubility: 50 g/L
• bulk density: 300 kg/m³
• storage temp.: no temp limit
• SMILES string: O1[C@@H]([C@@H]([C@H]([C@@H]([C@H]1CO)O)O)O)O[C@@H]2[C@H](O[C@@H]([C@@H]([C@H]2O)O)O)CO
• InChI: 1S/C12H22O11/c13-1-3-5(15)6(16)9(19)12(22-3)23-10-4(2-14)21-11(20)8(18)7(10)17/h3-20H,1-2H2/t3-,4-,5-,6+,7-,8-,9-,10-,11+,12-/m1/s1
• InChI key: GUBGYTABKSRVRQ-ASMJPISFSA-N

Description

General description

Carbohydrate
Starch is generally composed of two molecule types: amylose and amylopectin. Starch and modified starches are important excipients. They act as fillers/binders.

Application

Starch has been used:

• as a component in modified Columbia agar (MCA) to culture and isolate bacterial colonies
• in validation studies for determining molar substitution of hydroxyethylstarches (HES) by 1H nuclear magnetic resonance (1H NMR) spectroscopy
• as a substrate in anaerobic batch experiments to study the effect of carbohydrates on protein hydrolysis

Analysis Note

Appearance (color): white
Appearance (description): fine powder
pH-value (2 %; water): 6.0 - 7.5
Sensitivity: passes test
Reducing matter (as maltose): max 0.7
Sulfated ash: max 0.4
Loss on drying (105 °C, 2 h): max 10
Suitability as enzyme substrate (for amylases): passes test
Iso reagent

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable