# PHMSA Hazmat Incident I-1997080347 — SODIUM HYDROXIDE, SOLUTION — CYPRESS, FL

**Citation:** PHMSA Hazmat Incident I-1997080347  
**Type / status:** incident / historical  
**Agency:** Pipeline and Hazardous Materials Safety Administration  
**Effective:** 1997-06-04  
**Published:** Not stated

Serious reporter-submitted hazardous materials transportation incident on 1997-06-04 in CYPRESS, FL.

## Document text

PHMSA hazardous materials incident report I-1997080347.
Incident date: 1997-06-04.
Location: CYPRESS, FL.
Mode: Rail.
Carrier/reporter: CSX TRANSPORTATION.
Shipper: AIR PRODUCTS & CHEMICALS INC / CARBONIC INDUSTRIES CORP / DEGUSSA CORP / PIONEER CHLORALKALI CO INC.
Materials: UN1824; SODIUM HYDROXIDE, SOLUTION; hazard class 8; 10375 LGA released | UN1942; AMMONIUM NITRATE, WITH NOT MORE THAN 0.2% OF COMBUSTIBLE MATERIALS, INCLUDING ANY ORGANIC SUBSTANCE CALCULATED AS CARBON TO THE EXCLUSION OF ANY OTHER ADDED SUBSTANCE; hazard class 5.1; 40000 SLB released | UN2015; HYDROGEN PEROXIDE, STABILIZED OR HYDROGEN PEROXIDE AQUEOUS SOLUTIONS, STABILIZED WITH MORE THAN 60 PERCENT HYDROGEN PEROXIDE; hazard class 5.1; 1300 LGA released | UN2187; CARBON DIOXIDE, REFRIGERATED LIQUID; hazard class 2.2; 0 released.
What failed: Basic Material.
How failed: Punctured.
Reported failure causes: Derailment.
Reported result: Spillage.
Reporter-submitted DOT Form 5800.1 data may be incomplete, corrected, supplemented, or misreported. A record, serious-incident classification, failure description, or relationship to a reporting rule is not a PHMSA causal finding, compliance determination, or finding of a violation.

## Provenance

- Official: Yes
- Source: <https://portal.phmsa.dot.gov/PDFGenerator/getPublicReport/OHMIR_5800-1-PUBLIC?INCIDENTID=Q%2B3EQg40IHD95pGnwkiqEQ%3D%3D>
- Source ID: `phmsa-hazmat-incidents`
- SHA-256: `ead3442e005463c8ebf1ddbe24e7cdfbc0e3d74e655244f967d5abf4dff9eb41`
- Retrieved: 2026-08-13T12:55:56.545Z
- Exported: 2026-08-24T12:18:38.397Z
- Document slug: `phmsa-hazmat-incident-i-1997080347`

### Source metadata

```json
{
  "materialSubtype": "phmsa_hazmat_serious_incident",
  "reportNumber": "I-1997080347",
  "operatorReported": true,
  "serious": true,
  "finalAgencyFinding": false,
  "eventDescriptionExcluded": true,
  "publicPdfUrl": "https://portal.phmsa.dot.gov/PDFGenerator/getPublicReport/OHMIR_5800-1-PUBLIC?INCIDENTID=Q%2B3EQg40IHD95pGnwkiqEQ%3D%3D",
  "rowCount": 4,
  "carrierReporterNames": [
    "CSX TRANSPORTATION"
  ],
  "shipperNames": [
    "AIR PRODUCTS & CHEMICALS INC",
    "CARBONIC INDUSTRIES CORP",
    "DEGUSSA CORP",
    "PIONEER CHLORALKALI CO INC"
  ],
  "routes": [],
  "cities": [
    "CYPRESS"
  ],
  "states": [
    "FL"
  ],
  "originCities": [],
  "modes": [
    "Rail"
  ],
  "materials": [
    {
      "identificationNumber": "UN1824",
      "commodityName": "SODIUM HYDROXIDE, SOLUTION",
      "hazardousClass": "8",
      "quantityReleased": "10375",
      "unitOfMeasure": "LGA"
    },
    {
      "identificationNumber": "UN1942",
      "commodityName": "AMMONIUM NITRATE, WITH NOT MORE THAN 0.2% OF COMBUSTIBLE MATERIALS, INCLUDING ANY ORGANIC SUBSTANCE CALCULATED AS CARBON TO THE EXCLUSION OF ANY OTHER ADDED SUBSTANCE",
      "hazardousClass": "5.1",
      "quantityReleased": "40000",
      "unitOfMeasure": "SLB"
    },
    {
      "identificationNumber": "UN2015",
      "commodityName": "HYDROGEN PEROXIDE, STABILIZED OR HYDROGEN PEROXIDE AQUEOUS SOLUTIONS, STABILIZED WITH MORE THAN 60 PERCENT HYDROGEN PEROXIDE",
      "hazardousClass": "5.1",
      "quantityReleased": "1300",
      "unitOfMeasure": "LGA"
    },
    {
      "identificationNumber": "UN2187",
      "commodityName": "CARBON DIOXIDE, REFRIGERATED LIQUID",
      "hazardousClass": "2.2",
      "quantityReleased": "0",
      "unitOfMeasure": null
    }
  ],
  "packages": [
    {
      "identificationMarkings": null,
      "outerMaterial": null,
      "outerType": null,
      "outerCapacity": "0",
      "outerCapacityUnit": null,
      "outerShipmentCount": "1",
      "outerFailedCount": "1",
      "innerMaterial": null,
      "innerType": null,
      "innerCapacity": "0",
      "innerCapacityUnit": null,
      "innerShipmentCount": "0",
      "innerFailedCount": "0"
    }
  ],
  "reportingRuleContext": [
    "171.15",
    "171.16"
  ],
  "caveat": "Reporter-submitted DOT Form 5800.1 data may be incomplete, corrected, supplemented, or misreported. A record, serious-incident classification, failure description, or relationship to a reporting rule is not a PHMSA causal finding, compliance determination, or finding of a violation.",
  "privacyCaveat": "The public CSV excludes preparer contact fields. Event Description is intentionally excluded from normalized records and search output to reduce incidental personal-information risk.",
  "jurisdiction": "US"
}
```