Tungsten

A material safety data sheet parser.

Installation

Tungsten is available on PyPi via pip. To install, run the following command:

pip install tungsten-sds

Usage Example

import json
from pathlib import Path

from tungsten import SigmaAldrichSdsParser, SdsQueryFieldName, \
    SigmaAldrichFieldMapper

sds_parser = SigmaAldrichSdsParser()
sds_path = Path("CERILLIAN_L-001.pdf")

# Convert PDF file to parsed data
with open(sds_path, "rb") as f:
    sds = sds_parser.parse_to_ghs_sds(f)

field_mapper = SigmaAldrichFieldMapper()

fields = [
    SdsQueryFieldName.PRODUCT_NAME,
    SdsQueryFieldName.PRODUCT_NUMBER,
    SdsQueryFieldName.CAS_NUMBER,
    SdsQueryFieldName.PRODUCT_BRAND,
    SdsQueryFieldName.RECOMMENDED_USE_AND_RESTRICTIONS,
    SdsQueryFieldName.SUPPLIER_ADDRESS,
    SdsQueryFieldName.SUPPLIER_TELEPHONE,
    SdsQueryFieldName.SUPPLIER_FAX,
    SdsQueryFieldName.EMERGENCY_TELEPHONE,
    SdsQueryFieldName.IDENTIFICATION_OTHER,
    SdsQueryFieldName.SUBSTANCE_CLASSIFICATION,
    SdsQueryFieldName.PICTOGRAM,
    SdsQueryFieldName.SIGNAL_WORD,
    SdsQueryFieldName.STATEMENTS,
    SdsQueryFieldName.HNOC_HAZARD,
]

# Serialize parsed data to JSON and dump to a file
with open(sds_path.stem + ".json", "w") as f:
    sds.dump(f)
    # Also print out mapped fields
    for field in fields:
        print(field.name, field_mapper.get_field(field, json.loads(sds.dumps())))

License

This work is licensed under MIT. Media assets in the assets directory are licensed under a Creative Commons Attribution-NoDerivatives 4.0 International Public License.

Notes

This library currently comes bundled with a new build of tabula-java, which is also licensed under MIT, to see the full license, see https://github.com/tabulapdf/tabula-java/blob/master/LICENSE.