Dried sodium azide to packing

What it is

Unallocated foreground LCI of Sodium azide by the hydrazine / methyl nitrite route, batch, with precipitation from the reaction liquor, case design, derived from the flowsheet by cheme assess lca.

Reference product

1 kilogram of Dried sodium azide to packing (1.01325 bar(a), 60 degC, 99.2094 % NAN3S (mole))

Chemical

sodium-azide

CAS

26628-22-8

Code

sodium-azide-1:sodium-azide-by-the-hydrazine-methyl-nitrite-route-batch-with-precipitation-from-the-reaction-liquor:product:NAN3P

Dataset

sodium-azide-by-the-hydrazine-methyl-nitrite-route-batch-with-precipitation-from-the-reaction-liquor version 0.1.0 · UUID a1551f0b-c590-54e0-b1d5-9011b57e249f

Activity UUID

not available (the library assigns none; use the code)

Database

cheme-as-code-atlas-preview-a3c52e4 (version preview-a3c52e4)

Process

Sodium azide by the hydrazine / methyl nitrite route, batch, with precipitation from the reaction liquor (670 t/a)

Geography

GLO · background inputs with a site rule link at the user's site location (default DE)

Time period

2026 · valid until 2031

Technology

Batch plant on a dedicated train: methyl nitrite generated from sodium nitrite, methanol and 98.5 % sulfuric acid at 298 K (R-101) and absorbed over 10 h into hydrazine hydrate and caustic soda with the recycled mother liquor at 313 K (R-102, semi-batch); methanol stripped and the liquor concentrated at 10 kPa(a) (C-101), NaN3 precipitated at 303 K, filtered, washed with methanol and vacuum-dried at 333 K (filter-dryer F-101); 1027.6 kg per batch, 652.6 batches a year · level current

Boundary

gate-to-gate foreground of the plant

Production volume

670,643 kg/a (product:NAN3P per hour x operation.hours_per_year (7920 h/a))

Classification

ISIC Rev.4 2011 (taxonomy/families.yaml (ISIC Rev.4) of the process's families)

System model

attributional, cut-off (docs/system-model.md, methodology 1.1.0)

Allocation

mass, 100 % of the dataset to this product (rule single-output, from default)

one product: nothing to allocate

Rights

CC-BY-4.0: the ChemE-as-Code process library's own concept design (LICENSE-DATA)

Exchanges per 1 kilogram of Dried sodium azide to packing

As exported: allocated and scaled to the reference product. Provenance: 12 assumed, 4 calculated. Pedigree scores (1 best, 5 worst): reliability, completeness, temporal correlation, geographical correlation, further technological correlation.

Elementary flows

No elementary flows are exported for this activity (pass-through emissions and free inputs are left out, see the caveats).

The streams are the plant's own flows: an amount here is allocated and per 1 kilogram of Dried sodium azide to packing, so it differs from the stream's flow, and it can sum several streams.

Where these numbers come from: each exchange names its source above; the dataset is processes/sodium-azide-1/lca/dataset.yaml in library version a3c52e4.

Used by

No other activity of this database links to it.

How good it is

Review

Not reviewed: no LCI review record yet

Data quality

DQR 2.33 · PEF-style DQR 2.69

TeR 3 · GeR 3 · TiR 1 · P 3.75 · C 4 · weakest TeR · primary data 0 %

Mass and carbon closure

Assessed (lca/manifest.json balance, tolerance 5 %: design maturity concept (sourced screening))

• lci-carbon-origin: not-assessable
• lci-element-balance: not-assessable
• lci-mass-balance: closed

• element balance not assessable: no composition for consumable:nitrogen (no composition)
• carbon balance not assessable: no composition for consumable:nitrogen (no composition)

Change report

Not available: this build has no change report against an earlier release.

KPI benchmark positions

How to use it

Downloads

• cheme-as-code-atlas-preview-a3c52e4.xlsx · bw2io ExcelImporter workbook (bw2io 0.9 Excel layout) · the whole database
  code sodium-azide-1:sodium-azide-by-the-hydrazine-methyl-nitrite-route-batch-with-precipitation-from-the-reaction-liquor:product:NAN3P
• cheme-as-code-atlas-preview-a3c52e4-olca-jsonld.zip · openLCA JSON-LD (olca-schema) (2) · the whole database
  process a1551f0b-c590-54e0-b1d5-9011b57e249f (processes/a1551f0b-c590-54e0-b1d5-9011b57e249f.json)
• cheme-as-code-atlas-preview-a3c52e4-multifunctional.json · Brightway 2.5 multifunctional database (JSON, for the multifunctional package) (cheme-as-code/lci-multifunctional/v1) · the whole database
  code sodium-azide-1:sodium-azide-by-the-hydrazine-methyl-nitrite-route-batch-with-precipitation-from-the-reaction-liquor:product:NAN3P
• cheme_as_code_lci-0.1.0-py3-none-any.whl · the installer

A file with this activity alone is not available: each file above is the whole database, and the line under it says how to find this activity there.

import bw2data as bd
from cheme_as_code_lci import install

bd.projects.set_current("my-project")   # holds your licensed background + biosphere3
install("cheme-as-code-atlas-preview-a3c52e4.xlsx", background="ecoinvent-3.11-cutoff", location="DE")
activity = bd.get_activity(("cheme-as-code-atlas-preview-a3c52e4", "sodium-azide-1:sodium-azide-by-the-hydrazine-methyl-nitrite-route-batch-with-precipitation-from-the-reaction-liquor:product:NAN3P"))

While any exchange of the database has no mapping, install() writes nothing and only lists the unlinked exchanges. So the last line finds no activity until the gaps are mapped: the download section gives the ways to use the database now.

How to cite

Dried sodium azide to packing, from Sodium azide by the hydrazine / methyl nitrite route, batch, with precipitation from the reaction liquor (670 t/a) (dataset sodium-azide-by-the-hydrazine-methyl-nitrite-route-batch-with-precipitation-from-the-reaction-liquor 0.1.0), ChemE-as-Code Process Atlas LCI database preview-a3c52e4, activity sodium-azide-1:sodium-azide-by-the-hydrazine-methyl-nitrite-route-batch-with-precipitation-from-the-reaction-liquor:product:NAN3P. Cite the Process Atlas paper (in preparation, 2026), by Artur M. Schweidtmann and Jana M. Weber, and the ChemE-as-Code Process Atlas LCI database version preview-a3c52e4.

DOI: none yet (the Process Atlas paper is in preparation)

@unpublished{schweidtmann_process_atlas,
  author = {Schweidtmann, Artur M. and Weber, Jana M.},
  title = {{Process Atlas: an open, git-native, reproducible library and life cycle inventory of chemical processes (working title)}},
  year = {2026},
  url = {https://atlas.cheme-as-code.org},
  note = {in preparation}
}

@misc{schweidtmann_cheme_as_code,
  author = {Schweidtmann, Artur M.},
  title = {{ChemE-as-Code: An Open-Source Platform for Agentic AI in Chemical Engineering}},
  year = {2026},
  eprint = {2611.07947},
  archivePrefix = {arXiv},
  doi = {10.48550/arXiv.2611.07947},
  url = {https://arxiv.org/abs/2611.07947}
}