ChemDB

Software Screenshot:
ChemDB
Software Details:
Version: 0.5
Upload Date: 14 Apr 15
Developer: W. Trevor King
Distribution Type: Freeware
Downloads: 9

Rating: nan/5 (Total Votes: 0)

ChemDB is a little Django app in Python for managing our lab's list of chemicals. It also generates door warnings and inventories for compliance with our safety requirements.

Installing by hand

Chemdb is available as a Git repository:

 git clone git://tremily.us/chemdb.git

See the homepage for details. To install the checkout, run the standard:

 python setup.py install

Usage

Setup

If you don't have a Django project and you just want to run chemdb as a stand-alone service, you can use the example project written up in example. Set up the project (once):

 python example/manage.py syncdb

See the Django documentation for more details.

You may also want to load some example data, to make your initial browsing more interesting:

 python example/manage.py loaddata example_data

Running

Run the app on your local host (as many times as you like):

 python example/manage.py runserver

You may need to add the current directory to PYTHONPATH so python can find the chemdb package. If you're running bash, that will look like:

 PYTHONPATH=".:$PYTHONPATH" python example/manage.py runserver

Hacking

This project was largely build following the Django tutorial. That's a good place to start if you're new to Django.

Other resources

You can search CAS Registry numbers at NIST. This is useful for decoding MSDS information.

NFPA fire diamond

These are the meanings of the various NFPA warnings:

- Blue: Health Hazard
0. Hazard no greater than ordinary material
1. May cause irritation; minimal residual injury
2. Intense or prolonged exposure may cause incapacitation; Residual injury may occur if not treated
3. Exposure could cause serious injury even if treated
4. Exposure may cause death
- Red: Fire Hazard
0. Will not burn
1. Must be preheated for ignition; flashpoint above 200°F (93°C)
2. Must be moderately heated for ignition, flashpoint above 100°F (38°C)
3. Ignition may occur under most ambient conditions, Flashpoint below 100°F (38°C)
4. Extremely flammable and will readily disperse through air under standard conditions, flashpoint below 73°F (23°C)
- Reactivity hazards:
1. Stable
2. May become unstable at elevated temperatures and pressures. May be mildly water reactive
3. Unstable; may undergo violent decomposition, but will not detonate. May form explosive mixtures with water
4. Detonates with strong ignition source
5. Readily detonates
- Special Hazards have the following codes:
- OX strong oxidizer
- W̶ water reactive
- SA simple asphyxiants (The only gases for which this symbol is permitted are nitrogen, helium, neon, argon, krypton, and xenon.)

Requirements:

  • Python
  • python-django

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