Oxygen-18 water
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Contact usSpecifications
| Isotope Composition | |||
| O-18 | 98 atom% | ||
| O-17 | 1 atom% | ||
| O-16 | 1 atom% | ||
| Test | Specification | Test Result | Method/Reference |
| Conductivity | ≤5µS/cm | 1.4 | Conductometer |
| Purity | > 99.9 | 99.93 | / |
| pH | 44355 | 6.1 | pH meter |
| Total organic carbon | < 2mg/L | 0.1 | TOCanalyzer |
| Deuterium | ≤ 0.015%at | 0.015 | FT-IR |
| Endotoxin | < 125EU/ml | 112 | LAL |
| Micro Organism | < 10cfu/ml | 1 | 9215B |
| F | ≤ 0.5mg/L | 0.1 | IC |
| Cl | ≤ 0.5mg/L | 0.02 | IC |
| Br | ≤ 0.5mg/L | 0.1 | IC |
| NO3 | ≤ 0.5mg/L | 0.077 | IC |
| SO4 | ≤ 0.5mg/L | 0.01 | IC |
| Zn | ≤ 0.5mg/L | 0.1 | ICP |
| Cu | ≤ 0.5mg/L | 0.1 | ICP |
| Fe | ≤ 0.5mg/L | 0.1 | ICP |
| Na | ≤ 3mg/L | 0.1 | ICP |
| K | ≤ 0.5mg/L | 0.1 | ICP |
| Ca | ≤ 1mg/L | 0.1 | ICP |
| Mg | ≤ 0.5mg/L | 0.1 | ICP |
Physical and chemical properties
| Physical state | Liquid |
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| Appearance | Liquid |
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| Molecular mass | 20.02 g/mol (Labeled) |
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| Color | Colorless | |||
| Melting point | 0 °C | |||
| Freezing point | 0 °C | |||
| Boiling point | 100 °C (212 °F) - lit | |||
| Specific gravity / density | 1 g/ml at 3.98 °C | |||
product description
Enriched Oxygen-18 water is used as a target which is bom-barded with the help of cyclotron or linear accelerator in order to produce Flourine-18. Flourine-18 is synthesized into 2-deoxy-2- 18 F-β-D-glucopyranose( 18 F-FDG) which is a radiolabelled sugar molecule used in PET (Positron emission tomography) for determining sites of abnormal glucose metabolism and for local-ization of many types of tumors. Today 18 F-FDG is the most widespread and successful PET radiopharmaceutical. 18 F-FDG is an analogue of glucose, it is injected in vivo and then 18 F-FDG is transported from blood to tissues in a way similar to glucose. Cells absorb FDG like glucose but it cannot be metabolized. A very important advantage of FDG-PET is that it helps accurately define stage and sites of recurrent disease in many cancer types.
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