Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Emergency

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2025. This website is no longer updated and links to external websites and some internal pages may not work. More information »

    • Environmental Topics
    • Air
    • Bed Bugs
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Climate Change
    • Emergency Response
    • Environmental Information by Location
    • Environmental Justice
    • Greener Living
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Radon
    • Research
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History
    • Staff Directory

Breadcrumb

  1. Home
  2. Emergency Response

ZI-400

TECHNICAL PRODUCT BULLETIN #D-13
USEPA, OEM REGULATIONS IMPLEMENTATION DIVISION
ORIGINAL LISTING DATE: JUNE 16, 2005
REVISED LISTING DATE:
"ZI-400"
(a/k/a ZI-400 OIL SPILL DISPERSANT)
LAST COMMUNICATION WITH MANUFACTURER: 3/18/2016
LAST ATTEMPT: 7/19/2021

I. NAME, BRAND, OR TRADEMARK
ZI-400
Type of Product: Dispersant
II. NAME, ADDRESS, AND TELEPHONE NUMBER OF MANUFACTURER/CONTACT
Z.I. Chemicals
340 S Lemon Avenue #5358
Walnut, CA 91789
Phone: updated information required
E-mail: updated information required
Web Site: updated information required
III. NAME, ADDRESS, AND TELEPHONE NUMBER OF PRIMARY DISTRIBUTORS
Z.I. Chemicals
340 S Lemon Avenue #5358
Walnut, CA 91789
Phone: updated information required
E-mail: updated information required
Web Site: updated information required
IV. SPECIAL HANDLING AND WORKER PRECAUTIONS FOR STORAGE AND FIELD APPLICATION
1. Flammability:
Non-flammable (DOT: Non-Hazardous).
2. Ventilation:
No special requirements.
3. Skin and eye contact; protective clothing; treatment in case of contact:
No special equipment or clothing required; however, goggles are recommended. If eye or skin irritation occurs flush with plenty of water.
4.a. Maximum storage temperature: 120ºF continuous, 140°F up to 5 days
4.b. Minimum storage temperature: 35ºF
4.c. Optimum storage temperature range: 40 - 120ºF
4.d. Temperatures of phase separations and chemical changes: Stable
V. SHELF LIFE
Unlimited in sealed polydrums of totes (as delivered).
VI. RECOMMENDED APPLICATION PROCEDURE
1. Application Method:
ZI-400 may be applied by the usual method of aerial or boat spraying. For smaller spills a drum pump with sprayer may be used, mixing with water as required depending on the type and viscosity of oil being treated.
2. Concentration/Application Rate:
On heavy oils use ZI-400 directly on the spill, or up to approximately a 1:10 dilution ratio (product:water). Lighter oils will require a 1:10 to 1:30 product to water dilution ratio. Warmer waters (greater than 78°F) and/or good agitation during application will require less product.
3. Conditions for Use:
No limitations as to usage within in optimum temperature parameters (application may be made at or above 35°F, with optimum above 48°F).
VII. TOXICITY AND EFFECTIVENESS
a. Toxicity
Material Tested Species LC50 (ppm)
ZI-400 Menidia beryllina
Mysidopsis bahia
31.76 96-hr
20.96 48-hr
No. 2 Fuel Oil Menidia beryllina
Mysidopsis bahia
18.05 96-hr
2.66 48-hr
ZI-400 & No. 2 Fuel Oil (1:10) Menidia beryllina
Mysidopsis bahia
8.35 96-hr
1.77 48-hr
Reference Toxicant (SLS) Menidia beryllina
Mysidopsis bahia
16.13 96-hr
27.80 48-hr

b. Effectiveness:
SWIRLING FLASK DISPERSANT EFFECTIVENESS TEST WITH SOUTH LOUISIANA (S/L) AND PRUDHOE BAY (P/B) CRUDE OIL
VENDOR LAB REPORT:
Oil Effectiveness (%)
Prudhoe Bay Crude 50.10
South Louisiana Crude 89.80
Average of Prudhoe Bay and South Louisiana Crudes 69.90
VIII. MIROBIOLOGICAL ANALYSIS
NA
IX. PHYSICAL PROPERTIES
1. Flash Point, ASTM D-56: >93ºC
2. Pour Point, ASTM D-97: 12.6ºF
3. Viscosity, ASTM D-445: 18.80 cSt @40ºC
4. Specific Gravity, ASTM D-1298: 1.026 @60ºF
5. pH, ASTM 1293: 10.9
6. Surface Active Agents: Proprietary.
7. Solvents: Proprietary.
8. Additives: None.
9. Solubility: Miscible in oil, water, and solvents.
X. ANALYSIS FOR HEAVY METALS, CYANIDE, AND CHLORINATED HYDROCARBONS
Compound Concentration (ppm)
Arsenic <10
Cadmium <10
Chromium <10
Copper <10
Lead <10
Mercury <1
Nickel <10
Zinc <10
Cyanide <0.5
Chlorinated Hydrocarbons <1

Emergency Response

  • Emergency Response at EPA
  • Current and Past Responses
  • Response Tools
  • Response Partners
  • Emergency Operations Center
  • Consequence Management Advisory Team
  • Emergency Management Highlights
Contact Us about Emergency Response
Contact Us about Emergency Response to ask a question, provide feedback, or report a problem.
Last updated on August 13, 2024
  • Assistance
  • Ayuda
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • Aide
  • Asistans
  • Korean
  • Assistência
  • Russian
  • Tulong
  • Vietnamese
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data
  • Inspector General
  • Jobs
  • Newsroom
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions

Follow.