This program is designed to find and download safety data sheet of chemical using CAS number.

• FIND MISSING SAFETY DATA SHEET (SDS)
  • CONTENTS
  • DETAILS
  • REQUIREMENTS
  • USAGE
  • VERSIONS

• Provided with a list of CAS numbers, this program searches and downloads safety data sheet (SDS) into a designated folder. If a download folder is not provided, SDS will be downloaded into folder 'SDS' inside folder find_sds.
• This program uses multithreading to speed up the download process. By default, ten threads are used but it can be changed depends on running computer.
• Downloaded SDS are saved as '<CAS_Number>-SDS.pdf'
• Lookup databases include:
  • ChemBlink
  • VWR
  • Fisher Scientific
  • TCI Chemicals
  • ChemicalSafety
  • Fluorochem

• Python 3.10+
• Dependencies

1. Clone this repository:

   $ git clone https://github.com/khoivan88/find_sds.git    #if you have git
   # if you don't have git, you can download the zip file then unzip

2. Change into the directory of the program:

   $ cd find_sds

3. (Optional): create virtual environment for python to install dependency: Note: you can change find_sds_venv to another name if desired.

   $ python -m venv find_sds_venv   # Create virtual environment
   $ source find_sds_venv/bin/activate    # Activate the virtual environment on Linux
   # find_sds_venv\Scripts\activate    # Activate the virtual environment on Windows

4. Install python dependencies:

   $ pip install -r requirements.txt

5. Example usage:

   $ python

   >>> from find_sds.find_sds import find_sds
   >>> cas_list = ['141-78-6', '110-82-7', '67-63-0', '75-09-2', '109-89-7',
   ...     '872-50-4', '68-12-2', '96-47-9', '111-66-0', '110-54-3',
   ...     '00000-00-0',    # invalid CAS number, or unknown CAS
   ... ]
   >>> download_path = 'SDS'
   >>> find_sds(cas_list=cas_list, download_path=download_path, pool_size=10)
   Downloading missing SDS files. Please wait!
   
   Searching for 96-47-9-SDS.pdf ...
   
   Searching for 110-82-7-SDS.pdf ...
   
   Searching for 141-78-6-SDS.pdf ...
   
   Searching for 872-50-4-SDS.pdf ...
   
   Searching for 00000-0-0-SDS.pdf ...
   
   Searching for 111-66-0-SDS.pdf ...
   
   Searching for 110-54-3-SDS.pdf ...
   
   Searching for 75-09-2-SDS.pdf ...
   
   Searching for 68-12-2-SDS.pdf ...
   
   Searching for 67-63-0-SDS.pdf ...
   
   Searching for 109-89-7-SDS.pdf ...
   
   Still missing SDS:
   {'00000-00-0'}
   
   Summary:
           1 SDS files are missing.
           10 SDS files downloaded.
   
   
   (Optional): you can turn on debug mode (more error printing during search) using the following command:
   python find_sds/find_sds.py  --debug
   
   >>>

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