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MSDS 
:
 Buffer Solution pH 4
CAS 
:
 50-00-0
SYNONYMS 
:
 None.
**** SECTION 2 - COMPOSITION, INFORMATION ON INGREDIENTS ****

+----------------+--------------------------------------+----------+-----------+
| CAS# | Chemical Name | % | EINECS# |
|----------------|--------------------------------------|----------|-----------|
|----------------|--------------------------------------|----------|-----------|
| 50-00-0 |Formaldehyde | 0.05 | 200-001-8 |
|----------------|--------------------------------------|----------|-----------|
| 67-56-1 |Methyl alcohol | 0.02 | 200-659-6 |
|----------------|--------------------------------------|----------|-----------|
| 877-24-7 |Potassium Hydrogen Phthalate | 1.0 | 212-889-4 |
|----------------|--------------------------------------|----------|-----------|
| 7732-18-5 |Water | 98.93 | 231-791-2 |
+----------------+--------------------------------------+----------+-----------+
Text for R-phrases: see Section 16
Hazard Symbols: None Listed.
Risk Phrases: None Listed.

**** SECTION 3 - HAZARDS IDENTIFICATION ****

EMERGENCY OVERVIEW
Not available.

Potential Health Effects
Eye:
May cause eye irritation.
Skin:
May cause mild skin irritation. Low hazard for usual industrial
handling.
Ingestion:
Low hazard for usual industrial handling. May cause gastric
disturbances and electrolytic imbalance.
Inhalation:
May cause allergic respiratory reaction. May cause respiratory tract
irritation. Low hazard for usual industrial handling.
Chronic:
May cause cancer according to animal studies.

**** SECTION 4 - FIRST AID MEASURES ****

Eyes:
Get medical aid. Gently lift eyelids and flush continuously with
water.
Skin:
Get medical aid if irritation develops or persists. Wash clothing
before reuse. Flush skin with plenty of soap and water.
Ingestion:
Do not induce vomiting. If victim is conscious and alert, give 2-4
cupfuls of milk or water. Never give anything by mouth to an
unconscious person. Get medical aid.
Inhalation:
Get medical aid immediately. Remove from exposure and move to fresh
air immediately. If not breathing, give artificial respiration. If
breathing is difficult, give oxygen.
Notes to Physician:

**** SECTION 5 - FIRE FIGHTING MEASURES ****

General Information:
As in any fire, wear a self-contained breathing apparatus in
pressure-demand, MSHA/NIOSH (approved or equivalent), and full
protective gear. During a fire, irritating and highly toxic gases
may be generated by thermal decomposition or combustion. Use water
spray to keep fire-exposed containers cool. Use extinguishing media
appropriate to the surrounding fire. Substance is noncombustible.
Containers may explode when heated.
Extinguishing Media:
Substance is noncombustible; use agent most appropriate to
extinguish surrounding fire.

**** SECTION 6 - ACCIDENTAL RELEASE MEASURES ****

General Information: Use proper personal protective equipment as indicated
in Section 8.
Spills/Leaks:
Absorb spill with inert material (e.g. vermiculite, sand or earth),
then place in suitable container. Avoid runoff into storm sewers and
ditches which lead to waterways. Clean up spills immediately,
observing precautions in the Protective Equipment section. Provide
ventilation.

**** SECTION 7 - HANDLING and STORAGE ****

Handling:
Wash thoroughly after handling. Use with adequate ventilation. Avoid
contact with eyes. Keep container tightly closed. Wash clothing
before reuse.
Storage:
Store in a cool, dry, well-ventilated area away from incompatible
substances. Keep containers tightly closed.

**** SECTION 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION ****

Engineering Controls:
Good general ventilation should be sufficient to control airborne
levels.
Exposure Limits
CAS# 50-00-0:
United Kingdom, WEL - TWA: 2 ppm TWA; 2.5 mg/m3 TWA
United Kingdom, WEL - STEL: 2 ppm STEL; 2.5 mg/m3 STEL
United States OSHA: ; 0.75 ppm TWA; 2 ppm STEL; 0.5 ppm Action Le
(Irritant and potential cancer ha zard - see 29 CFR 1910.1048)
Belgium - STEL: 0.3 ppm VLE; 0.38 mg/m3 VLE
France - VME: 0.5 ppm VME
France - VLE: 1 ppm VLE
Germany: 0.5 ppm TWA; 0.62 mg/m3 TWA
Germany: Skin absorber
Japan: 0.5 ppm OEL; 0.61 mg/m3 OEL
Malaysia: 0.3 ppm Ceiling; 0.37 mg/m3 Ceiling
Netherlands: 2 ppm STEL; 3 mg/m3 STEL
Netherlands: 1 ppm MAC; 1.5 mg/m3 MAC
Russia: 0.5 mg/m3 TWA
Spain: 0.3 ppm VLA-EC; 0.37 mg/m3 VLA-EC
CAS# 67-56-1:
United Kingdom, WEL - TWA: 200 ppm TWA; 266 mg/m3 TWA
United Kingdom, WEL - STEL: 250 ppm STEL; 333 mg/m3 STEL
United States OSHA: 200 ppm TWA; 260 mg/m3 TWA
Belgium - TWA: 200 ppm VLE; 266 mg/m3 VLE
Belgium - STEL: 250 ppm VLE; 333 mg/m3 VLE
France - VME: 200 ppm VME; 260 mg/m3 VME
France - VLE: 1000 ppm VLE; 1300 mg/m3 VLE
Germany: 200 ppm TWA; 270 mg/m3 TWA
Germany: Skin absorber
Japan: 200 ppm OEL; 260 mg/m3 OEL
Malaysia: 200 ppm TWA; 262 mg/m3 TWA
Netherlands: 200 ppm MAC; 260 mg/m3 MAC
Russia: 5 mg/m3 TWA
Spain: 200 ppm VLA-ED; 266 mg/m3 VLA-ED
Spain: 250 ppm VLA-EC; 333 mg/m3 VLA-EC
CAS# 877-24-7:

CAS# 7732-18-5:


Personal Protective Equipment

Eyes:
Wear appropriate protective eyeglasses or chemical
safety goggles as described by OSHA's eye and face
protection regulations in 29 CFR 1910.133 or European
Standard EN166.
Skin:
Wear appropriate gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to minimize
contact with skin.
Respirators:
Follow the OSHA respirator regulations found in 29
CFR 1910.134 or European Standard EN 149. Use a
NIOSH/MSHA or European Standard EN 149 approved
respirator if exposure limits are exceeded or if
irritation or other symptoms are experienced.

**** SECTION 9 - PHYSICAL AND CHEMICAL PROPERTIES ****

Physical State: Liquid
Color: clear, colorless
Odor: odorless
pH: 4.0
Vapor Pressure: Not available.
Viscosity: Not available.
Boiling Point: Not available.
Freezing/Melting Point: Not available.
Autoignition Temperature: Not available.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature:
Solubility in water: soluble
Specific Gravity/Density:
Molecular Formula:
Molecular Weight:

**** SECTION 10 - STABILITY AND REACTIVITY ****

Chemical Stability:
Stable.
Conditions to Avoid:
None reported.
Incompatibilities with Other Materials:
Not available.
Hazardous Decomposition Products:
Formaldehyde.
Hazardous Polymerization: Not available.

**** SECTION 11 - TOXICOLOGICAL INFORMATION ****

RTECS#:
CAS# 50-00-0: LP8925000
CAS# 67-56-1: PC1400000
CAS# 877-24-7: CZ4326000
CAS# 7732-18-5: ZC0110000
LD50/LC50:
CAS# 50-00-0: Draize test, rabbit, eye: 750 ug/24H Severe; Draize
test, rabbit, eye: 750 ug Severe; Draize test, rabbit, eye: 10 mg
Severe; Draize test, rabbit, eye: 37% Severe; Draize test, rabbit,
skin: 2 mg/24H Severe; Draize test, rabbit, skin: 50 mg/24H Moderate;
Inhalation, mouse: LC50 = 454 mg/m3/4H; Inhalation, mouse: LC50 = 505
mg/m3/2H; Inhalation, rat: LC50 = 203 mg/m3; Inhalation, rat: LC50 =
578 mg/m3/2H; Inhalation, rat: LC50 = 250 ppm/2H; Oral, mouse: LD50
= 42 mg/kg; Oral, mouse: LD50 = 385 mg/kg; Oral, mouse: LD50 = 500
mg/kg; Oral, rat: LD50 = 100 mg/kg; Oral, rat: LD50 = 500 mg/kg;
Skin, rabbit: LD50 = 270 uL/kg; Skin, rabbit: LD50 = 270 mg/kg.
CAS# 67-56-1: Draize test, rabbit, eye: 40 mg Moderate; Draize test,
rabbit, eye: 100 mg/24H Moderate; Draize test, rabbit, skin: 20
mg/24H Moderate; Inhalation, rabbit: LC50 = 81000 mg/m3/14H;
Inhalation, rat: LC50 = 64000 ppm/4H; Oral, mouse: LD50 = 7300
mg/kg; Oral, rabbit: LD50 = 14200 mg/kg; Oral, rat: LD50 = 5600
mg/kg; Skin, rabbit: LD50 = 15800 mg/kg.
CAS# 877-24-7: Dermal, guinea pig: LD50 = >1 gm/kg; Oral, rat: LD50
= >3200 mg/kg.
CAS# 7732-18-5: Oral, rat: LD50 = >90 mL/kg.
Carcinogenicity:
Formaldehyde -
ACGIH: A2 - Suspected Human Carcinogen
California: carcinogen, initial date 1/1/88 (gas)
NTP: Suspect carcinogen
IARC: Group 1 carcinogen
Methyl alcohol -
Not listed by ACGIH, IARC, or NTP.
Potassium Hydrogen Phthalate -
Not listed by ACGIH, IARC, or NTP.
Water -
Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.

**** SECTION 12 - ECOLOGICAL INFORMATION ****

Other
No information available.

**** SECTION 13 - DISPOSAL CONSIDERATIONS ****

Dispose of in a manner consistent with federal, state, and local regulations.

**** SECTION 14 - TRANSPORT INFORMATION ****

IATA
Not regulated as a hazardous material.
IMO
Not regulated as a hazardous material.
RID/ADR
Not regulated as a hazardous material.
USA RQ: CAS# 50-00-0: 100 lb final RQ; 45.4 kg final RQ
USA RQ: CAS# 67-56-1: 5000 lb final RQ; 2270 kg final RQ

**** SECTION 15 - REGULATORY INFORMATION ****

European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: Not available.
Risk Phrases:
Safety Phrases:
S 24/25 Avoid contact with skin and eyes.
WGK (Water Danger/Protection)
CAS# 50-00-0: 2
CAS# 67-56-1: 1
CAS# 877-24-7: No information available.
CAS# 7732-18-5: No information available.
Canada
CAS# 50-00-0 is listed on Canada's DSL List.
CAS# 67-56-1 is listed on Canada's DSL List.
CAS# 877-24-7 is listed on Canada's DSL List.
CAS# 7732-18-5 is listed on Canada's DSL List.
CAS# 50-00-0 is listed on Canada's Ingredient Disclosure List.
CAS# 67-56-1 is listed on Canada's Ingredient Disclosure List.
CAS# 877-24-7 is not listed on Canada's Ingredient Disclosure List.
CAS# 7732-18-5 is not listed on Canada's Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 50-00-0 is listed on the TSCA inventory.
CAS# 67-56-1 is listed on the TSCA inventory.
CAS# 877-24-7 is listed on the TSCA inventory.
CAS# 7732-18-5 is listed on the TSCA inventory.

**** SECTION 16 - ADDITIONAL INFORMATION ****

Text for R-phrases from Section 2
R 11 Highly flammable.
R 23/24/25 Toxic by inhalation, in contact with skin and
if swallowed.
R 43 May cause sensitization by skin contact.
R 39/23/24/25 Toxic : danger of very serious irreversible
effects through inhalation, in contact with skin and if swallowed.
MSDS Creation Date: 2/17/1999 Revision #4 Date: 7/29/2002

The information above is believed to be accurate and represents the best
information currently available to us. However, we make no warranty of
merchantability or any other warranty, express or implied, with respect to
such information, and we assume no liability resulting from its use. Users
should make their own investigations to determine the suitability of the
information for their particular purposes. In no way shall the company be
liable for any claims, losses, or damages of any third party or for lost
profits or any special, indirect, incidental, consequential or exemplary
damages, howsoever arising, even if the company has been advised of
the possibility of such damages.
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2-Nitrochalcone 7473-93-0
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4-Methoxychalcone 959-33-1
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