CAS 7732-18-5: Water
Description:Water, with the chemical formula H₂O and CAS number 7732-18-5, is a vital and ubiquitous substance on Earth. It is a polar molecule, characterized by its bent shape, which results in a significant dipole moment. This polarity contributes to its excellent solvent properties, allowing it to dissolve a wide range of ionic and polar substances. Water has a high specific heat capacity, which enables it to absorb and retain heat, playing a crucial role in regulating temperatures in natural environments. It exhibits unique properties such as high surface tension and cohesion, which are essential for various biological processes. Water exists in three states: solid (ice), liquid, and gas (water vapor), with its phase transitions occurring at specific temperature and pressure conditions. Additionally, water has a high latent heat of vaporization, which is important for processes like cooling and climate regulation. Its density is highest at 4°C, which leads to ice floating on liquid water, an essential characteristic for aquatic ecosystems. Overall, water is fundamental to life, influencing chemical reactions, biological functions, and environmental systems.
Formula:H2O
InChI:InChI=1S/H2O/h1H2
InChI key:InChIKey=XLYOFNOQVPJJNP-UHFFFAOYSA-N
SMILES:O
- Synonyms:
- (~3~H_2_)water
- Agua Destilada, De Conductividad O De Igual Grado De Pureza
- Aqua
- Aquafina
- Craon 17-502
- DRiWATER
- De-ionized water
- Deionized Ultra-filtered Water
- Deionized Water
- Dihydrogen oxide
- See more synonyms
- Distilled water
- Eau
- Eaux
- Hydrogen oxide
- Hydrogen oxide (H2O)
- Hydrogen oxide (H<sub>2</sub>O)
- Ice
- Milli-Q water
- Nsc 147337
- R 718
- Spa
- Steam
- Sterile Water For Injection
- Ultrex II Ultrapure
- Wasser
- Water (Moisture)
- Water, Distilled
- Water

Bromophenol Blue, pure, 0.1% in water
Ref: AC-40315
25ml | 72.00 € | ||
100ml | 212.00 € |

Nitric acid, technical, 60% solution in water
Ref: AC-44440
5l | To inquire |

Inositol hexaphosphoric acid, 50 wt% aqueous solution
Ref: AC-23537
1l | 251.00 € | ||
250ml | 91.00 € | ||
2500ml | 491.00 € |

Methyl Vinyl Ketone, Stabilized ca 95%
Ref: AC-12800
1l | 284.00 € | ||
5ml | 44.00 € |

Sodium chloride, pure, ca. 26% solution in water
Ref: AC-38764
1l | 27.00 € | ||
2500ml | 52.00 € |

Silver nitrate, 0.1 N standard solution
Ref: AC-12425
1l | 114.00 € | ||
5l | 351.00 € |

Polyethyleneimine, ∽ M.N. 60,000, 50 wt.% aq. solution, branched
Ref: AC-17857
1kg | 401.00 € | ||
100g | 75.00 € | ||
250g | 145.00 € |

4-Methylmorpholine N-oxide, 50 wt.% solution in water
Ref: AC-34827
1kg | 168.00 € | ||
100g | 47.00 € |

2-Nitrophenylhydrazine, 97%, moistened with ca 30% water
Ref: AC-12883
10g | 75.00 € |

Ethanol, 99.5%, Extra Dry, absolute, AcroSeal™
Ref: AC-39769
100ml | To inquire | ||
2500ml | To inquire |

Hydrogen peroxide, pure, 50 wt% solution in water, stabilized
Ref: AC-30286
500ml | 112.00 € | ||
2500ml | 345.00 € |

Nitric acid, ACS reagent, 68-70% solution in water
Ref: AC-42400
25ml | To inquire | ||
500ml | To inquire | ||
2500ml | To inquire |

Potassium iodate, 98%, extra pure
Ref: AC-19674
100g | 51.00 € | ||
500g | 153.00 € | ||
2500g | 539.00 € |

Sodium hydroxide, 0.1 N standard solution
Ref: AC-12419
1l | To inquire | ||
25l | To inquire | ||
2500ml | To inquire |

Glutaric dialdehyde, 8% solution in water
Ref: AC-41097
100g | 72.00 € |

2-Mercaptopyridine-N-oxide, sodium salt, 40 w/w % aqueous solution
Ref: AC-25774
1l | 200.00 € | ||
5l | 654.00 € | ||
2500ml | To inquire |

Hydrochloric acid, ACS reagent, ca. 37% solution in water
Controlled ProductRef: AC-42379
25l | 206.00 € | ||
500ml | 24.00 € | ||
2500ml | 61.00 € |

Ammonium hydroxide, ACS reagent, 28-30% solution in water
Ref: AC-42330
10l | To inquire | ||
25ml | 29.00 € | ||
500ml | 34.00 € | ||
2500ml | 87.00 € |

Buffer solution pH 4, Phthalate buffer, traceable to NIST, ready to use
Ref: AC-38383
1l | 61.00 € | ||
500ml | 38.00 € |

Glycerol, pure, 83.5-88.5 wt% aqueous solution
Ref: AC-27736
1l | 101.00 € | ||
5l | To inquire |