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ChemicalIdentifiers | Hazards | ResponseRecommendations |PhysicalProperties |RegulatoryInformation | AlternateChemicalNames
Chemical Identifiers
What is this information?
The Chemical Identifier fields include common identification numbers, theNFPA diamond U.S. Department of Transportation hazard labels, and a general description of the chemical. The information in CAMEO Chemicals comes from a variety of data sources.
| CAS Number | UN/NA Number | DOT Hazard Label | USCG CHRIS Code |
|---|---|---|---|
|
|
| none |
| NIOSH Pocket Guide | International Chem Safety Card | ||
| none | none | ||
NFPA 704
data unavailable
General Description
Snow white crystals. Used as a reagent for ketones and aldehydes with which it affords crystalline compounds having characteristic melting points. (EPA, 1998)
Hazards
What is this information?
The Hazard fields include special hazard alerts air and water reactions, fire hazards, health hazards, a reactivity profile, and details about reactive groups assignments and potentially incompatible absorbents. The information in CAMEO Chemicals comes from a variety of data sources.
Reactivity Alerts
none
Air & Water Reactions
Water soluble. Acid reaction in water. (NTP, 1992)
Fire Hazard
When heated to decomposition, it emits very toxic fumes of nitrogen oxides and hydrogen chloride. (EPA, 1998)
Health Hazard
Toxic by ingestion. (EPA, 1998)
Reactivity Profile
When heated to decomposition, it emits very toxic fumes of nitrogen oxides and hydrogen chloride. [EPA, 1998].
Belongs to the Following Reactive Group(s)
- Amides and Imides
- Azo, Diazo, Azido, Hydrazine, and Azide Compounds
- Salts, Acidic
Potentially Incompatible Absorbents
No information available.
Response Recommendations
What is this information?
The Response Recommendation fields include isolation and evacuation distances, as well as recommendations for firefighting, non-fire response, protective clothing, and first aid. The information in CAMEO Chemicals comes from a variety of data sources.
Isolation and Evacuation
Excerpt from ERG Guide 154 [Substances - Toxic and/or Corrosive (Non-Combustible)]:
IMMEDIATE PRECAUTIONARY MEASURE: Isolate spill or leak area in all directions for at least 50 meters (150 feet) for liquids and at least 25 meters (75 feet) for solids.
SPILL: Increase the immediate precautionary measure distance, in the downwind direction, as necessary.
FIRE: If tank, rail car or tank truck is involved in a fire, ISOLATE for 800 meters (1/2 mile) in all directions; also, consider initial evacuation for 800 meters (1/2 mile) in all directions. (ERG, 2020)
Firefighting
(Non-Specific -- Poisonous Solid, n.o.s.) Wear self-contained (positive pressure if available) breathing apparatus and full protective clothing.
(Non-Specific -- Poisonous Solid, n.o.s.) This material may burn, but does not ignite readily. For small fires use dry chemical, carbon dioxide, water spray, or foam. For large fires, use water spray, fog, or foam. (EPA, 1998)
Non-Fire Response
(Non-Specific -- Poisonous Solid, n.o.s.) Isolate hazard area. Stay upwind; keep out of low areas. Do not touch spilled material. Absorb small spills with sand or other noncombustible absorbent material and place into containers for later disposal. Take up small, dry spills with clean shovel; place material into clean, dry container and cover; move containers from spill area. Dike far ahead of large spills for later disposal. (EPA, 1998)
Protective Clothing
For emergency situations, wear a positive pressure, pressure-demand, full facepiece self-contained breathing apparatus (SCBA) or pressure- demand supplied air respirator with escape SCBA and a fully-encapsulating, chemical resistant suit. (EPA, 1998)
DuPont Tychem® Suit Fabrics
No information available.
First Aid
Signs and Symptoms of Semicarbazide Hydrochloride Exposure: No information on specific clinical effects of exposure to semicarbazide hydrochloride was found in available references. However, animal data indicate that signs and symptoms of acute exposure to semicarbazide hydrochloride may include loss of coordination, dizziness, tremors, convulsions, and seizures.
Emergency Life-Support Procedures: Acute exposure to semicarbazide hydrochloride may require decontamination and life support for the victims. Emergency personnel should wear protective clothing appropriate to the type and degree of contamination. Air-purifying or supplied-air respiratory equipment should also be worn, as necessary. Rescue vehicles should carry supplies such as plastic sheeting and disposable plastic bags to assist in preventing spread of contamination.
Inhalation Exposure:
1. Move victims to fresh air. Emergency personnel should avoid self-exposure to semicarbazide hydrochloride.
2. Evaluate vital signs including pulse and respiratory rate, and note any trauma. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer 100% humidified oxygen or other respiratory support.
3. Obtain authorization and/or further instructions from the local hospital for performance of other invasive procedures.
4. Transport to a health care facility.
Dermal/Eye Exposure:
1. Remove victims from exposure. Emergency personnel should avoid self-exposure to semicarbazide hydrochloride.
2. Evaluate vital signs including pulse and respiratory rate, and note any trauma. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer 100% humidified oxygen or other respiratory support.
3. Remove contaminated clothing as soon as possible.
4. If eye exposure has occurred, eyes must be flushed with lukewarm water for at least 15 minutes.
5. Wash exposed skin areas thoroughly with soap and water.
6. Obtain authorization and/or further instructions from the local hospital for performance of other invasive procedures.
7. Transport to a health care facility.
Ingestion Exposure:
1. Evaluate vital signs including pulse and respiratory rate, and note any trauma. If no pulse is detected, provide CPR. If not breathing, provide artificial respiration. If breathing is labored, administer 100% humidified oxygen or other respiratory support.
2. DO NOT induce vomiting or attempt to neutralize.
3. Obtain authorization and/or further instructions from the local hospital for administration of an antidote or performance of other invasive procedures.
4. Activated charcoal may be administered if victims are conscious and alert. Use 15 to 30 g in children (1/2 to 1 oz) (1 to 2 g/kg in infants), and 30 to 100 g (1 to 3-1/2 oz) in adults. Administer one dose of a cathartic, mixed with charcoal or given separately.
5. Transport to a health care facility. (EPA, 1998)
Physical Properties
What is this information?
The Physical Property fields include properties such as vapor pressure and boiling point, as well as explosive limits and toxic exposure thresholds The information in CAMEO Chemicals comes from a variety of data sources.
| Chemical Formula: |
|
Flash Point: data unavailable
Lower Explosive Limit (LEL): data unavailable
Upper Explosive Limit (UEL): data unavailable
Autoignition Temperature: data unavailable
Melting Point: 342 to 347°Fdecomposes at 347-365°F(EPA, 1998)
Vapor Pressure: data unavailable
Vapor Density (Relative to Air): data unavailable
Specific Gravity: data unavailable
Boiling Point: 347 to 365°Fat 760 mmHgDECOMPOSES(NTP, 1992)
Molecular Weight: 111.54 (EPA, 1998)
Water Solubility: Very soluble(NTP, 1992)
Ionization Energy/Potential: data unavailable
IDLH: data unavailable
AEGLs (Acute Exposure Guideline Levels)
No AEGL information available.
ERPGs (Emergency Response Planning Guidelines)
No ERPG information available.
PACs (Protective Action Criteria)
| Chemical | PAC-1 | PAC-2 | PAC-3 |
|---|---|---|---|
| Semicarbazide hydrochloride (563-41-7) | 9.1 mg/m3 | 100 mg/m3 | 600 mg/m3 |
(DOE, 2018)
Regulatory Information
What is this information?
The Regulatory Information fields include information from the U.S. Environmental Protection Agency's Title III Consolidated List of Lists, the U.S. Cybersecurity and Infrastructure Security Agency's Chemical Facility Anti-Terrorism Standards, and the U.S. Occupational Safety and Health Administration's Process Safety Management of Highly Hazardous Chemicals Standard List (see more about these data sources).
EPA Consolidated List of Lists
| Regulatory Name | CAS Number/ 313 Category Code | EPCRA 302 EHS TPQ | EPCRA 304 EHS RQ | CERCLA RQ | EPCRA 313 TRI | RCRA Code | CAA 112(r) RMP TQ |
|---|---|---|---|---|---|---|---|
| Semicarbazide hydrochloride | 563-41-7 | 1000/10000 pounds | 1000 pounds |
(EPA List of Lists, 2022)
CISA Chemical Facility Anti-Terrorism Standards (CFATS)
No regulatory information available.
OSHA Process Safety Management (PSM) Standard List
No regulatory information available.
Alternate Chemical Names
What is this information?
This section provides a listing of alternate names for this chemical, including trade names and synonyms.
- AMIDOUREA HYDROCHLORIDE
- AMINOUREA HYDROCHLORIDE
- CARBAMYL HYDRAZINE HYDROCHLORIDE
- CARBAMYLHYDRAZINE HYDROCHLORIDE
- HYDRAZINECARBOXAMIDE MONOHYDROCHLORIDE
- HYDRAZINECARBOXAMIDE, HYDROCHLORIDE
- HYDRAZINECARBOXAMIDE, MONOHYDROCHLORIDE
- SEMICARBAZIDE CHLORIDE
- SEMICARBAZIDE HYDROCHLORIDE
- SEMICARBAZIDE, HYDROCHLORIDE
- SEMICARBAZIDE, MONOHYDROCHLORIDE
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CAMEO Chemicals version 2.8.0 rev 1.